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	<title>Texas A&#38;M Transportation Institute&#187; safety</title>
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	<link>http://tti.tamu.edu</link>
	<description>Saving Lives, Time and Resources.</description>
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		<title>National Crash-Testing Standards: TTI Makes a Big Impact with 18-Wheelers</title>
		<link>http://tti.tamu.edu/2012/12/01/national-crash-testing-standards-tti-makes-a-big-impact-with-18-wheelers/</link>
		<comments>http://tti.tamu.edu/2012/12/01/national-crash-testing-standards-tti-makes-a-big-impact-with-18-wheelers/#comments</comments>
		<pubDate>Sun, 02 Dec 2012 01:44:04 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 4]]></category>
		<category><![CDATA[18-wheeler]]></category>
		<category><![CDATA[barrier]]></category>
		<category><![CDATA[crash testing]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[national standards]]></category>
		<category><![CDATA[NCHRP]]></category>
		<category><![CDATA[safety]]></category>

		<guid isPermaLink="false">https://tti.tamu.edu/?p=10832</guid>
		<description><![CDATA[At TTI’s crash facility, a fully loaded 18-wheeler traveling at 50 mph slammed into a concrete barrier placed on top of a retaining wall. The data from the unique crash test will prove vital.]]></description>
				<content:encoded><![CDATA[<div id="attachment_11157" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4crashtest-18wheeler-lg.jpg" rel="shadowbox[sbpost-10832];player=img;"><img class="size-full wp-image-11157" alt="18-wheeler crash test performed at TTI" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4crashtest-18wheeler.jpg" width="240" height="170" /></a><p class="wp-caption-text">An 18-wheeler crashes into a concrete barrier at TTI’s Proving Grounds. For the first time, the test was streamed live via the Internet for clients across the country.</p></div>
<p>On Sept. 26, 2012, at the Texas A&amp;M Transportation Institute’s (<abbr>TTI</abbr>’s) Riverside Campus crash facility, a fully loaded 18-wheeler traveling at 50 mph slammed into a concrete barrier placed on top of a retaining wall. The data from the unique crash test will prove vital for increasing safety and decreasing construction costs for this type of barrier application. The test was broadcast across the country via the Internet as a first-ever streaming event.</p>
<p>The mechanically stabilized earth (<abbr>MSE</abbr>) wall — where a truck barrier sits atop a retaining wall — is being used more often by state departments of transportation. <abbr>TTI</abbr> Research Engineer Roger Bligh and his team of researchers, including renowned geotechnical expert Jean-Louis Briaud, measured the impact of the collision on the barrier system and <abbr>MSE</abbr> wall as a key task on <abbr>NCHRP</abbr> 22-20(02): Design Guidelines for TL-3 through TL-5 Roadside Barrier Systems Placed on <abbr>MSE</abbr> Retaining Walls. Bligh, manager of <abbr>TTI</abbr>’s Roadside Safety Program, and Briaud are co-principal investigators on the project.</p>
<p>Findings from this first-of-its-kind crash test will have major implications. “There is no information available that tells industry how to design the barrier foundation system and the retaining wall to accommodate an impact from a large commercial truck,” Bligh notes.</p>
<p>According to Briaud, manager of <abbr>TTI</abbr>’s Geotechnical and Geoenvironmental Program, retaining walls have become more popular due to space limitations in and around urban areas. “Those walls, and the concrete barriers on top of them, are necessary when there is no room for earthen slopes. But until now, researchers and construction companies could only guess the force that’s applied to the wall from a fully loaded 18-wheeler.” Briaud conducted computer simulations of crashes for months on the project.</p>
<p>Without guidelines to help determine the appropriate size and type of wall and barrier, road designers and construction firms were often overly conservative in their choices. Bligh says the data from the test will help take the guesswork out of the equation.</p>
<p>Peter Anderson, vice president for technical development of the Reinforced Earth Company (<abbr>RECo</abbr>), a design and supply firm considered a market leader in the <abbr>MSE</abbr> retaining wall industry, assisted with the project. Bligh says <abbr>RECo</abbr>’s involvement in the test dramatically lowered project costs thanks to the donation of materials needed for the test installation.</p>
<p>Attending the crash test was Mark S. Bush, <abbr>NCHRP</abbr> senior program officer overseeing the research project. Bush says numerous steps have to be taken before new guidelines for this application will be adopted.</p>
<p>“Now that this critical crash test has been conducted, <abbr>TTI</abbr> will complete the analyses and finish a detailed final report to be reviewed by an expert <abbr>NCHRP</abbr> panel for publication and committees from the American Association of State Highway and Transportation Officials for adoption,” Bush says. “This was a crucial test for refining barrier design procedures and standards to ensure the safety of the traveling public.”</p>
<p></div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>From Texas to the Nation</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 4" /><p>Volume 48, Number 4<br />December 2012<!-- <br />December 2012--><br /><a href="http://tti.tamu.edu/2012/12/01/from-texas-to-the-nation/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;"><br />
<img class="aligncenter size-full wp-image-11155" style="margin-top: -1em; margin-bottom: -1em;" alt="NCHRP 22-20" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4nchrp-2220-tag.jpg" width="210" height="79" /></p>
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
<blockquote><p>This was a crucial test for refining barrier design procedures and standards<br />
to ensure the safety of the traveling public.”<br />
<cite>Mark S. Bush, NCHRP senior program officer</cite></p></blockquote>
<h2 id="more-info">For more information:</h2>
<address>Roger Bligh<br />
(979) 845-4377<br />
<a href="mailto:rbligh@tamu.edu">rbligh@tamu.edu</a><br />
<span class="strong">or</span><br />
Jean-Louis Briaud<br />
(979) 845-3795<br />
<a href="mailto:briaud@tamu.edu">briaud@tamu.edu</a></address>
</div>

]]></content:encoded>
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		<item>
		<title>Demanding a Recount on Motorcycle Crashes</title>
		<link>http://tti.tamu.edu/2012/12/01/demanding-a-recount-on-motorcycle-crashes/</link>
		<comments>http://tti.tamu.edu/2012/12/01/demanding-a-recount-on-motorcycle-crashes/#comments</comments>
		<pubDate>Sun, 02 Dec 2012 00:45:48 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 4]]></category>
		<category><![CDATA[crash data]]></category>
		<category><![CDATA[detection technology]]></category>
		<category><![CDATA[motorcycle]]></category>
		<category><![CDATA[NCHRP]]></category>
		<category><![CDATA[safety]]></category>

		<guid isPermaLink="false">https://tti.tamu.edu/?p=10835</guid>
		<description><![CDATA[NCHRP Project 08-81, Improving the Quality of Motorcycle Travel Data Collection, tasked TTI with reviewing current traffic detection methods, investigating new technologies and reporting on which count motorcycles the best.]]></description>
				<content:encoded><![CDATA[<h1>Are we counting motorcycles accurately?</h1>
<p>Statistics from 2000 and 2008 indicate that motorcycle fatalities increased by 83 percent. During the same time period, the vehicle miles traveled (<abbr>VMT</abbr>) by motorcycles increased by only 38 percent. Is this a deadly trend, or are the <abbr>VMT</abbr> numbers valid?</p>
<p>“The numbers we’re counting don’t reflect the rise in crashes, injuries and fatalities,” notes Texas A&amp;M Transportation Institute (<abbr>TTI</abbr>) Research Engineer Dan Middleton. “Are we counting motorcycles well enough? The answer is no.”</p>
<p><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4motorcycle-car-lg.jpg" rel="shadowbox[sbpost-10835];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4motorcycle-car.jpg" alt="view from passenger-side window through to the driver-side; driver surprised by motorcycle driving towards her" width="600" height="236" class="aligncenter size-full wp-image-11160" /></a></p>
<p><abbr>NCHRP</abbr> Project 08-81, Improving the Quality of Motorcycle Travel Data Collection, tasked Middleton with reviewing current traffic detection methods, investigating new technologies and reporting on which count motorcycles the best.</p>
<p>“Motorcycle fatalities are increasing on our roadways, but data haven’t shown much change in <abbr>VMT</abbr> for several years,” explains Christopher Hedges, <abbr>NCHRP</abbr> senior program officer. “That gives us a perception &#8212; one that is quite likely erroneous &#8212; that higher fatalities are resulting from some characteristics of the rider, the road or the motorcycle itself.”</p>
<p>Current detection technologies are divided into two categories: intrusive and non-intrusive. Intrusive detectors, like piezoelectric cables, require some modification of the pavement. Non-intrusive detectors, like passive infrared systems, are mounted above or beside the roadway.</p>
<p>Which ones work best? According to Middleton, piezoelectric cables work fine (particularly when brand new), but they require lane closures for installation and maintenance. Also, many agencies install sensors covering only half the lane width, allowing motorcycles to be missed. Preliminary results from recent tests on passive infrared systems in Florida indicate that infrared sensors distinguish motorcycles from cars and count the former correctly.</p>
<p>The methodology used to count motorcycles is also at issue. For example, consider the two distinct rider groups: commuters and recreational riders. Each group has a distinct riding pattern. Count locations for recreational riders are probably different from those for commuters.</p>
<p>“If you want to get a representative sample, you can’t just count urban areas. Commuters ride on weekdays, but recreational riders ride on weekends and holidays, and often on back roads,” Middleton says.</p>
<p>Middleton is using motorcycle crash reports to determine whether crash locations are good identifiers of count sites. Preliminary evidence from two states indicates that this method will work.</p>
<p>“Crashes happen where motorcycles travel. We used data to create a map that shows both motorcycle crash locations and motorcycle counts along all roadways. We haven’t found anything else that predicts where to count in these rural areas,” Middleton says.</p>
<p>The project couldn’t have come at a better time since states are now required to report motorcycle travel to the federal Highway Performance Monitoring System.</p>
<p>“Until we have a good understanding of true motorcycle volumes, we won’t have a good measure of exposure rates &#8212; the number of crashes and fatalities as a factor of actual motorcycle miles traveled,” Hedges says. “Without that kind of knowledge, it’s impossible to develop safety programs that address real needs and the right risk factors. This project has the potential to make a real difference in our understanding of motorcycle safety.”</p>
<p></div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>From Texas to the Nation</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 4" /><p>Volume 48, Number 4<br />December 2012<!-- <br />December 2012--><br /><a href="http://tti.tamu.edu/2012/12/01/from-texas-to-the-nation/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;"><br />
  <img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4nchrp-0881-tag.jpg" alt="NCHRP 08-81" width="210" height="79" class="aligncenter size-full wp-image-11153" style="margin-top: -1em; margin-bottom: -1em;" /></p>
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
<h2 id="more-info">For more information:</h2>
<div id="attachment_11033" class="wp-caption aligncenter" style="width: 220px"><a rel="shadowbox;width=640;height=360;" href="https://player.vimeo.com/video/57148041"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/12/v48n4proj-video-middleton.jpg" alt="Access Dan Middleton&#039;s project interview." width="210" height="120" class="size-full wp-image-11033" /></a><p class="wp-caption-text"><a rel="shadowbox;width=640;height=360;" href="https://player.vimeo.com/video/57148041" style="color: white;"><span style="color: white;">Dan Middleton Interview</span></a></p></div>
<address>Dan Middleton<br />
  (979) 845-7196<br />
  <a href="mailto:d-middleton@tamu.edu">d-middleton@tamu.edu</a></address>
</div>

]]></content:encoded>
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		</item>
		<item>
		<title>Another TTI First: Broadcasting Crash Tests</title>
		<link>http://tti.tamu.edu/2012/10/04/another-tti-first-broadcasting-crash-tests/</link>
		<comments>http://tti.tamu.edu/2012/10/04/another-tti-first-broadcasting-crash-tests/#comments</comments>
		<pubDate>Thu, 04 Oct 2012 18:59:56 +0000</pubDate>
		<dc:creator>r-davenport@tti.servers</dc:creator>
				<category><![CDATA[MyTTI News]]></category>
		<category><![CDATA[News]]></category>
		<category><![CDATA[crash testing]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[infrastructure]]></category>
		<category><![CDATA[NCHRP]]></category>
		<category><![CDATA[retaining wall]]></category>
		<category><![CDATA[roadside safety]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[semi-truck]]></category>
		<category><![CDATA[tractor-trailer]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9796</guid>
		<description><![CDATA[On Sept. 26, for the first time in Texas A&#38;M Transportation Institute (TTI) history, a crash test at TTI&#8217;s Proving Grounds was broadcast live via the Internet to clients and stakeholders across the country. Providing live streaming crash tests was the brainchild of Dean Alberson, assistant agency director and manager of the TTI Crashworthy Structures [...]]]></description>
				<content:encoded><![CDATA[<p>On Sept. 26, for the first time in Texas A&amp;M Transportation Institute (TTI) history, a crash test at TTI&#8217;s <a href="http://tti.tamu.edu/facilities/details/?id=8" target="_blank">Proving Grounds</a> was broadcast live via the Internet to clients and stakeholders across the country.</p>
<div id="attachment_9831" class="wp-caption alignright" style="width: 310px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/Crash-Impact.jpg" rel="shadowbox[sbpost-9796];player=img;"><img class="size-medium wp-image-9831" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/Crash-Impact-300x240.jpg" alt="This is a photo of an 18-wheeler crashing into a concrete barrier as part of a crash test." width="300" height="240" /></a><p class="wp-caption-text">An 18-wheeler crashes into a concrete barrier at TTI&#8217;s Proving Grounds. For the first time, the test was streamed live via the Internet for clients across the country.</p></div>
<p>Providing live streaming crash tests was the brainchild of <a href="http://tti.tamu.edu/people/resume/?id=1558" target="_blank">Dean Alberson</a>, assistant agency director and manager of the TTI <a href="http://tti.tamu.edu/group/crashtesting/groups/crashworthy-structures-program/" target="_blank">Crashworthy Structures Program</a>, who began looking into the possibility more than a year ago.</p>
<p>“Having clients able to view their crash test live at our facility from back in their home office as it happens seemed like a logical next step for us,” Alberson says. “First of all, it would save them the expense of traveling. And there have been times when a crash test had to be postponed because of weather or other conditions. In those cases, the client wasted a trip here.”</p>
<p>The National Cooperative Highway Research Program (NCHRP) crash test involved an 18-wheeler traveling at 50 miles-per-hour and crashing at a 15-degree angle into a concrete barrier that was placed on top of a retaining wall.</p>
<p>“There were 176 computers that viewed the crash test,” Brad Hoover, TTI chief information officer, says. “We’re not sure how many <em>people</em> viewed, but it is clear that this initial live crash test was a popular event among NCHRP panel members.”</p>
<p>Based on the success of this first live-streaming crash test, TTI might offer it to other clients in the future. As for the crash test itself, it had two objectives according to TTI Roadside Safety Program Manager <a href="http://tti.tamu.edu/people/resume/?id=107" target="_blank">Roger Bligh</a>, who was the principal investigator on the project.</p>
<div id="attachment_9838" class="wp-caption alignleft" style="width: 310px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/Crash-Test-Aftermath.jpg" rel="shadowbox[sbpost-9796];player=img;"><img class="size-medium wp-image-9838" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/Crash-Test-Aftermath-300x211.jpg" alt="This is a photo of a retaining wall after a crash test." width="300" height="211" /></a><p class="wp-caption-text">People view a retaining wall at TTI&#8217;s Proving Grounds after the 18-wheeler crash test.</p></div>
<p>“We wanted to determine how much force was transmitted in the underlying retaining wall so we can develop proper design guidelines for both the wall and the barrier system,” he says. “All indications are that the test went well, and the design of the wall and the barrier did their job.”</p>
<p>Co-principal investigator <a href="http://tti.tamu.edu/people/resume/?id=603" target="_blank">Jean-Louis Briaud</a>, manager of TTI’s <a href="http://tti.tamu.edu/group/constructed/groups/geotechnical-and-geoenvironmental/" target="_blank">Geotechnical and Geoenviornmental Program</a>, says numerous four-dimensional numerical simulations were performed on the retaining wall before the crash test was performed.</p>
<p>“Because of space limitations, more and more of these retaining walls — called mechanically stabilized earth walls — are being used for road construction in urban areas. It’s important that we know that they will hold up during a crash,” Briaud says.</p>
]]></content:encoded>
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		<item>
		<title>National Seat Check Saturday</title>
		<link>http://tti.tamu.edu/2012/09/05/national-seat-check-saturday/</link>
		<comments>http://tti.tamu.edu/2012/09/05/national-seat-check-saturday/#comments</comments>
		<pubDate>Wed, 05 Sep 2012 19:20:50 +0000</pubDate>
		<dc:creator>Chris Sasser</dc:creator>
				<category><![CDATA[MyTTI News]]></category>
		<category><![CDATA[News]]></category>
		<category><![CDATA[child]]></category>
		<category><![CDATA[child safety seat]]></category>
		<category><![CDATA[National Child Passenger Safety Week]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[seat]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9578</guid>
		<description><![CDATA[Bev Kellner has a daunting task: teaching parents how to properly buckle up their children in a child safety seat. Sounds easy enough, but considering that most of the more than 19,000 kids in car seats she’s checked over the last 14 years have been buckled improperly or not at all, she won’t be out [...]]]></description>
				<content:encoded><![CDATA[<p><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/car_seat.jpg" rel="shadowbox[sbpost-9578];player=img;"><img class="alignright size-medium wp-image-9592" title="child safety seats" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/car_seat-199x300.jpg" alt="This is a photo of child safety seats lined up" width="199" height="300" /></a><a title="Bev Kellner resume" href="http://fcs.tamu.edu/about_fcs/pages/bev-kellner.php">Bev Kellner</a> has a daunting task: teaching parents how to properly buckle up their children in a child safety seat. Sounds easy enough, but considering that most of the more than 19,000 kids in car seats she’s checked over the last 14 years have been buckled improperly or not at all, she won’t be out of a job anytime soon.</p>
<p>“Every year, there are new parents, and we will continue to teach them,” says Kellner, the manager of the Passenger Safety project at <a title="Texas A&#038;M AgriLife Extension Service" href="http://agrilifeextension.tamu.edu/">Texas A&amp;M AgriLife Extension</a>. “There are so many different kinds of car seats, and it’s very confusing to parents. With our National Seat Check Saturday events, we find kids either in no seat at all or in seats that are wrong for the child. Almost, without exception, every seat is improperly installed. It’s all very dangerous in the event of a crash.”</p>
<p>Car crashes are the leading cause of death for children. In 2009, more than 1,300 children aged 14 and younger died in motor vehicle crashes with nearly 180,000 injuries, according to the National Highway Traffic Safety Administration (NHTSA). Also reported by NHTSA — child safety seats reduce child deaths by up to 71 percent for infants and toddlers.</p>
<p>It’s why Kellner and other certified child safety-seat technicians are taking part in the Saturday seat checks across the country as part of <a title="Child Passenger Safety Week website" href="http://www.nhtsa.gov/Safety/CPS">National Child Passenger Safety Week</a>, Sept. 16–22. During her Bryan, Texas, seat check event at the Brazos Center Sept. 22, technicians will be available from 8:00 to 11:00 a.m. providing one-on-one education to parents about the correct selection and installation of child safety seats. “If parents are unable to attend a seat check, they don’t have to wait until next year, and we don’t want them to,” Kellner says. “I urge them to contact a certified Child Passenger Safety Technician.” To find a technician closest to you, check out <a href="http://buckleup.tamu.edu">Buckleup.tamu.edu</a>. The site lists hundreds of experts across the state.</p>
<p>Kellner points out that, in addition to properly restraining their children, parents should:</p>
<ul>
<li>Keep their child in a rear facing seat until the age of two, or until they reach 35 pounds.</li>
<li>Keep their child in a 5-point harness system until they are ready for a booster seat.</li>
<li>Use a booster seat after the child weighs 40 pounds and until the child is 4 foot 9 inches tall, which usually happens about age 11.</li>
<li>Keep their child in the rear seat until age 13.</li>
</ul>
<p>Coinciding with Child Passenger Safety Week, the Texas Department of Transportation began a public awareness campaign called “Save Me With A Seat” to call attention to proper child-seat installation and ensure Texas children are in the right seat for their weight and height.</p>
<p>Parents can find more information and view a video on proper child safety seats and their installation at <a href="http://www.bucklethemright.org">www.bucklethemright.org</a>.</p>
<div class="sidebar-article">
<h2>TTI Annual Observation Surveys</h2>
<p>For the last 29 years, the Texas A&amp;M Transportation Institute (TTI) has conducted annual observational surveys to determine how many children are restrained in child safety seats. The surveys take place in 14 Texas cities — near child care centers and shopping centers. In 1984, only 22 percent of children were buckled in car safety seats. That number has steadily increased to near 90 percent in 2011. “It has been encouraging to see the numbers rise over the decades,” TTI Senior Research Scientist <a title="Katie Womack resume" href="http://tti.tamu.edu/people/resume/?id=51">Katie Womack</a> says. “Of course, we would like to see 100 percent usage because we all know the dangers of leaving a child unrestrained.”</p>
<p>TTI employees who conduct the observational surveys each year are Child Passenger Safety Technicians and volunteer at child seat-checks. “As important as it is to have a child in a child safety seat or booster seat, it’s also important that they be restrained properly. And that’s what these seat-checks are designed to do,” Womack says.
</p></div>
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		<item>
		<title>Providing Positive Protection for Work Zones</title>
		<link>http://tti.tamu.edu/2012/09/01/providing-positive-protection-for-work-zones/</link>
		<comments>http://tti.tamu.edu/2012/09/01/providing-positive-protection-for-work-zones/#comments</comments>
		<pubDate>Sat, 01 Sep 2012 17:17:22 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 3]]></category>
		<category><![CDATA[economics]]></category>
		<category><![CDATA[positive protection]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[work zone]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9889</guid>
		<description><![CDATA[TTI conducted a project to develop more comprehensive guidelines for the Texas Department of Transportation's use in assessing the need for positive protection in work zones.]]></description>
				<content:encoded><![CDATA[<p><strong>When you  get down to it, roadside safety is about minimizing negative impacts; in some  cases, quite literally.</strong></p>
<p>Safety in work zones is no different.  The biggest threat to work-zone safety occurs when  motorists and workers come into conflict &#8212; when a car strays into a work-zone  area, for example, putting all involved at risk.</p>
<p>Of course, the safest solution is to  always use positive protection to separate motorists and workers while work is  ongoing. But that’s not always possible in today’s economic environment.  Cash-strapped states have to optimize how resources are spent on their  transportation networks.</p>
<p>Though the Texas Department of  Transportation (<abbr>TxDOT</abbr>) has had procedures in place for assessing the need for  positive protection for years, those guidelines relied on specific assumptions  about where intrusions might occur. The agency decided it needed more  comprehensive guidelines, so a team led by Jerry Ullman, manager of the Texas  A&amp;M Transportation Institute’s Work Zone and Dynamic Message Sign Program,  conducted a project to develop the needed guidelines.</p>
<p>&ldquo;I feel that our real contribution in  this project lies in generalizing the potential location of the worker or  equipment throughout a given work-zone area,&rdquo; says Ullman. &ldquo;This makes our  model more realistic and, therefore, more accurate when applied to real-world  situations.&rdquo;</p>
<p>Researchers looked at the number of  vehicles traveling in a corridor to estimate the probability that a  motorist-worker conflict would occur. Using those data, Ullman and his team  compared the cost of installing and maintaining traffic barriers with the  societal costs associated with injuries and deaths resulting from crashes. From  there, they came up with specific break-even recommendations for when Texas  should introduce positive protection to work zones.</p>
<p>Put simply, the study showed that the  closer the work area is to the travel lanes, the more justified positive  protection is. That’s because there’s a higher probability, with a closer  proximity of motorist to worker, for conflict to occur. As the distance between  the travel lanes and the work-zone area increases, the cost benefit of  installing protective barriers decreases at lower volumes.</p>
<p>Researchers  also found that steel and mobile barriers can be cost-effective alternatives  for short-duration mobile operations with workers on foot in high-volume,  high-speed corridors. Truck-mounted attenuators were also found to be very cost  effective, offsetting their costs in less than a year of use in most cases.</p>
<p>&ldquo;Through this project, the researchers were able  to determine when and under what conditions barrier protection is justified,&rdquo;  says Research Engineer Wade Odell of <abbr>TxDOT</abbr>’s Office of Research and Technology  Implementation. &ldquo;This is significant in that the contractor can provide  motorists with proper protection in a work zone and still provide the  protection cost effectively.&rdquo;</p>
</div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>Partners in Transportation Research</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 3" /><p>Volume 48, Number 3<br />September 2012<!-- <br />September 2012--><br /><a href="http://tti.tamu.edu/2012/09/01/partners-in-transportation-research/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;">
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
  <a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3cms-giveusabreak-lg.jpg" rel="shadowbox[sbpost-9889];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3cms-giveusabreak.jpg" alt="changeable message sign with text &quot;Give Us A Break&quot; within a work zone along a busy highway" title="" width="210" height="87" class="aligncenter size-full wp-image-10069" /></a></p>
<blockquote style="margin-top: -1em;"><p>“Positive protection” refers to the addition of equipment (e.g., traffic barriers) to the work-zone environment to minimize or prevent motorist-worker conflict.</p></blockquote>
<h2 id="more-info">For more information:</h2>
<address>Jerry Ullman<br />
  (979) 845-9908<br />
  <a href="mailto:j-ullman@tamu.edu">j-ullman@tamu.edu</a></address>
</div>

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		<title>Broader Shoulders Support Safer Roadways</title>
		<link>http://tti.tamu.edu/2012/09/01/broader-shoulders-support-safer-roadways/</link>
		<comments>http://tti.tamu.edu/2012/09/01/broader-shoulders-support-safer-roadways/#comments</comments>
		<pubDate>Sat, 01 Sep 2012 17:14:00 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 3]]></category>
		<category><![CDATA[infrastructure]]></category>
		<category><![CDATA[roadway widening]]></category>
		<category><![CDATA[safety]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9885</guid>
		<description><![CDATA[Texas highways are safer now thanks to scores of projects completed in the last few years to add shoulders and width on more than 1,000 miles of rural, two-lane highways, according to an analysis by TTI.]]></description>
				<content:encoded><![CDATA[<h1>The Numbers Are In</h1>
<p span class="strong">Texas  highways are safer now thanks to scores of projects completed in the last few  years to add shoulders and width on more than 1,000 miles of rural, two-lane  highways, according to an analysis by the Texas A&amp;M Transportation  Institute (<abbr>TTI</abbr>).</p>
<p>The  review of 189 Texas Department of Transportation (<abbr>TxDOT</abbr>) road projects around  the state shows that wider pavements make highways safer and result in fewer  crashes.</p>
<p>Recently,  <abbr>TxDOT</abbr> asked <abbr>TTI</abbr> to analyze and review three years of pre- and post-improvement  data on more than 1,000 miles of narrow two-lane highways that had been  widened. The numbers show that on 1,159 miles of recently added highway  shoulders, there were 133 fewer fatalities and 895 fewer injuries compared to  prior to widening.</p>
<p><abbr>TTI</abbr>  has estimated that these projects could save up to 44 lives each year or 880  lives over 20 years, and prevent 298 injuries or 5,960 injuries, respectively.</p>
<p>&ldquo;Safety  is our top priority,&rdquo; says <abbr>TxDOT</abbr> Executive Director Phil Wilson. &ldquo;The agency’s  roadway-widening initiative has been a tremendous success, for increasing  safety on Texas highways, saving lives and potentially saving billions of  dollars associated with fatal crashes and sustained injuries.&rdquo;</p>
<p>In  2003, voters gave the Texas Transportation Commission the authority to issue $3 billion in bonds to pay for state highway improvements. The law stipulated that 20 percent of that  amount must be used to fund projects that would reduce crashes or correct or  improve hazardous locations on the state system. The Texas Legislature later  increased the bonding authority to $6 billion. In 2004, <abbr>TTI</abbr> helped <abbr>TxDOT</abbr>  identify locations across the state where the road-widening projects could  yield the most significant crash reductions.</p>
<p><abbr>TTI</abbr>  is also analyzing recently completed projects &#8212; mostly from the 2009 safety bond initiative &#8212; but these projects reflect only one  or two years of post-construction crash data. Still, as a result of completed  widening projects from that bond initiative, fatalities were reduced by an  average of five annually. The $29 million construction cost for those 37  projects &#8212; through the 20-year life of the project &#8212; could save an estimated $456.4 million from fewer  fatalities and serious injuries.</p>
<p>Researchers  expect to update their analysis once three years of crash data are available  for the balance of safety improvement projects across the state.</p>
<p>&ldquo;I  am proud of the role I played in creating the Safety Bond Program, and I  sincerely thank <abbr>TxDOT</abbr> and the people of Texas for making it happen,&rdquo; says Sen.  Steve Ogden.</p>
<p><abbr>TxDOT</abbr> plans on expanding  these efforts in the future in areas where widening improvements are needed.</p>
</div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>Partners in Transportation Research</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 3" /><p>Volume 48, Number 3<br />September 2012<!-- <br />September 2012--><br /><a href="http://tti.tamu.edu/2012/09/01/partners-in-transportation-research/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;">
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
  <a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3expanded-2lanehwy-lg.jpg" rel="shadowbox[sbpost-9885];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3expanded-2lanehwy.jpg" alt="rural, two-lane highways with additional shoulders and width added" title="" width="210" height="128" class="aligncenter size-full wp-image-10059" /></a></p>
<blockquote style="margin-top: -1em;"><p>“Safety is our top priority. The agency’s roadway-widening initiative has been a tremendous success, for increasing safety on Texas highways, saving lives and potentially saving billions of dollars associated with fatal crashes and sustained injuries.”<br />
  <cite>Phil Wilson, TxDOT executive director</cite></p></blockquote>
<h2 id="more-info">For more information:</h2>
<address>Robert Wunderlich<br />
  (972) 994-0433<br />
  <a href="mailto:rwunderlich@tamu.edu">rwunderlich@tamu.edu</a></address>
</div>

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		<title>Safety Experts Focus on Motorcycle Fatalities</title>
		<link>http://tti.tamu.edu/2012/09/01/safety-experts-focus-on-motorcycle-fatalities/</link>
		<comments>http://tti.tamu.edu/2012/09/01/safety-experts-focus-on-motorcycle-fatalities/#comments</comments>
		<pubDate>Sat, 01 Sep 2012 17:10:55 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 3]]></category>
		<category><![CDATA[education]]></category>
		<category><![CDATA[looklearnlive]]></category>
		<category><![CDATA[motorcycle fatalities]]></category>
		<category><![CDATA[motorcycle safety]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[traffic safety conference]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9881</guid>
		<description><![CDATA[An entire session of the annual Traffic Safety Conference was dedicated to motorcycle safety this year in addition to related remarks made during the conference's opening session.]]></description>
				<content:encoded><![CDATA[<p>Sixteen  percent of all vehicle fatalities in Texas involve motorcyclists, according to  David Strickland, the administrator of the National Highway Traffic Safety  Administration. A recently licensed motorcyclist himself, Strickland was a  speaker during the opening session of the fourth annual Traffic Safety  Conference in San Antonio this summer.</p>
<div id="attachment_10015" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3motorcycling-101-lg.jpg" rel="shadowbox[sbpost-9881];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3motorcycling-101.jpg" alt="two motorcyclists taking the Course for Motorcycle Riders" title="" width="240" height="130" class="size-full wp-image-10015" /></a><p class="wp-caption-text">Described as Motorcycling 101, The Course for Motorcycle Riders teaches both new and experienced riders how to safely operate a motorcycle. Riders seeking a motorcycle license in Texas are required to take The Course.</p></div>
<p>&ldquo;I love motorcyclists, and I  love motorcycling, but motorcyclists don’t necessarily love me,&rdquo; Strickland  told the crowd of more than 200 law-enforcement personnel, transportation  researchers, policy makers, public health officials, traffic engineers and  other safety professionals from around the state. &ldquo;I will tell anybody: wear a  helmet, wear the right clothing, and get yourself into a riding class. Because  statistically speaking, you’re on two wheels, so you’re at a physical  disadvantage. Why stack the odds against yourself even more?&rdquo;</p>
<p>Strickland informed the group that motorcyclists also have a much  higher rate of riding impaired when compared to passenger-vehicle drivers. And  although Texas crash fatality rates have steadily decreased over the last  several years, that’s not the case where motorcycles are concerned. &ldquo;The  fatality rate with motorcycles is really keeping Texas back in term of overall  fatalities,&rdquo; Strickland said.</p>
<p>&ldquo;While we saw a decline in motorcycle deaths for the first time  in over a decade in 2009, we must continue our efforts to promote sharing the  road safely and watching out for motorcycles,&rdquo; says Research Scientist Patricia  Turner of the Texas A&amp;M Transportation Institute’s Center for  Transportation Safety. &ldquo;The most recent statistics show that motorcycle  fatalities increased by 10 percent, from 435 in 2010 to 479 in 2011.&rdquo;</p>
<p>An entire session of this  year’s Traffic Safety Conference was dedicated to motorcycle safety. Speakers  for the session included Turner and Jude Schexnyder, chair of the Texas  Motorcycle Safety Coalition.</p>
<p>&ldquo;Motorcyclists are 25 more times more likely than passengers in  cars to be killed in an accident, and they are five times more likely to be  injured,&rdquo; <abbr>TxDOT</abbr> Deputy Executive Director John Barton said during his speech at  the opening session of the conference.</p>
<p>Barton informed the crowd that he was involved in  a crash with a motorcyclist in 1997. &ldquo;I flat out did not see them,&rdquo; he said,  adding that motorcycle safety programs like Share the Road are necessary. &ldquo;It’s  important for all of us to remind each other that we have to pay attention and  we have to take a second look.&rdquo;</p>
<div class="sidebar-article">
<h2 id="lll">LookLearnLive.org</h2>
<div id="attachment_10013" class="wp-caption alignright" style="width: 220px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3lll-screenshot-lg.jpg" rel="shadowbox[sbpost-9881];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3lll-screenshot.jpg" alt="screenshot from the LookLearnLive website" title="" width="210" height="138" class="size-full wp-image-10013" /></a><p class="wp-caption-text">Created by TTI in 2009, the Look, Learn, Live motorcycle safety campaign was launched by the Texas Department of Transportation to address the rising number of motorcycle fatalities in the state. Visit <a href="http://www.looklearnlive.org/" style="color: white; border-bottom: none;"><span style="color: white;" title="LookLearnLive website">http://looklearnlive.org</span></a> or Facebook at  <a href="http://www.facebook.com/TexasMotorcycleSafety" style="color: white; border-bottom: none;"><span style="color: white;" title="LookLearnLive.org on Facebook">http://www.facebook.com/TexasMotorcycleSafety</span></a>.</p></div>
<p><a href="http://www.looklearnlive.org/">LookLearnLive.org</a> promotes motorcycle safety through awareness and training for riders and motorists alike. Since its launch in 2009, the site has become a clearinghouse for all aspects of motorcycling including safety, legislation and riding events. Riders are also encouraged to visit the LookLearnLive.org Facebook page for timely announcements about riding safety.</p>
<p>&ldquo;LookLearnLive.org is the go-to source for motorcycle safety in Texas,&rdquo; says site administrator Michelle Hoelscher, Texas A&#038;M Transportation Institute (<abbr>TTI</abbr>) communications specialist. &ldquo;We’re reaching out to both motorcycle riders and motorists to say, &lsquo;Be more aware of each other. It’s dangerous out there.&rsquo;&rdquo;</p>
<p>Besides informing visitors about safety statistics and best practices for maximizing safety (like looking left twice before entering an intersection), the site also promotes personal responsibility for riders through the &ldquo;I Ride for Tomorrow&rdquo; initiative. A form on the site asks bikers to accept personal responsibility for riding safely, legally and soberly.</p>
</div>
</div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>Partners in Transportation Research</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 3" /><p>Volume 48, Number 3<br />September 2012<!-- <br />September 2012--><br /><a href="http://tti.tamu.edu/2012/09/01/partners-in-transportation-research/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;">
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#lll">LookLearnLive.org</a></li>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
  <a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3motorcycle-headlights-lg.jpg" rel="shadowbox[sbpost-9881];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3motorcycle-headlights.jpg" alt="motorcycle headlights" title="" width="210" height="60" class="aligncenter size-full wp-image-10017" /></a></p>
<h2 id="more-info">For more information:</h2>
<address>Patty Turner<br />
  (979) 845-4872<br />
  <a href="mailto:p-turner@tamu.edu">p-turner@tamu.edu</a></address>
</div>

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		<title>The I-35 Expansion Project</title>
		<link>http://tti.tamu.edu/2012/09/01/the-i35-expansion-project/</link>
		<comments>http://tti.tamu.edu/2012/09/01/the-i35-expansion-project/#comments</comments>
		<pubDate>Sat, 01 Sep 2012 17:09:39 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 3]]></category>
		<category><![CDATA[congestion]]></category>
		<category><![CDATA[infrastructure]]></category>
		<category><![CDATA[Mobility]]></category>
		<category><![CDATA[reconstruction]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[traffic forecasts]]></category>
		<category><![CDATA[traffic management]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9879</guid>
		<description><![CDATA[The Texas Department of Transportation created MY 35, a citizen-driven effort to expand a 96-mile stretch from Hillsboro to Salado of I-35, and engaged TTI to provide independent technical support for the effort.]]></description>
				<content:encoded><![CDATA[<h1>Making the Most of Main Street Texas</h1>
<p class="strong">Traffic congestion is as  familiar as bluebonnets on the roadside for anyone who’s traveled I-35 in the last 20 years.</p>
<p>The interstate route &#8212; which in Texas  stretches south from the Red River all the way to the Rio Grande at Laredo &#8212;  has carried commerce and commuters across the Lone Star State for nearly 150  years. Before the modern highway was christened I-35 in 1959, much of it was  known as the Chisholm Trail.</p>
<p>Once crowded with cattle in long  drives north to Kansas, today’s I-35 has a similar reputation for being tightly  packed &#8212; only now it’s bumpers, not bovines, causing the slowdown. In an  innovative approach to improving the roadway’s capacity, the Texas Department  of Transportation (<abbr>TxDOT</abbr>) created MY 35, a citizen-driven effort to expand a  96-mile stretch from Hillsboro to Salado of I-35 in the Waco District. At an  estimated total cost of $2.5 billion, the overall effort is made up of 17  smaller construction projects and targeted for completion in 2017.</p>
<h2 id="txdot-tti"><abbr>TxDOT</abbr> Teams with <abbr>TTI</abbr></h2>
<div id="attachment_10006" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3salado-freeway-lg.jpg" rel="shadowbox[sbpost-9879];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3salado-freeway.jpg" alt="traffic on a Salado freeway" title="" width="240" height="125" class="size-full wp-image-10006" /></a><p class="wp-caption-text">Commuters and businesses alike will soon benefit from the expansion of I-35 in TxDOT&#8217;s Waco District. Due for completion in 2017, the project is widening corridor capacity and improving safety to better meet the traveling needs of Texans.</p></div>
<p>A  project of this size is a huge undertaking, and not just when it comes to  coordinating the construction itself. <abbr>TxDOT</abbr> is reconstructing nearly 100 miles  of roadway in a relatively short amount of time, and that affects hundreds of  thousands of citizens living nearby, tens of thousands of businesses, and  millions of travelers over the life of the project.</p>
<p><abbr>TxDOT</abbr> engaged the Texas A&amp;M  Transportation Institute (<abbr>TTI</abbr>) to provide independent technical support for the  effort. One way <abbr>TTI</abbr> is helping is by providing mobility coordinators to keep  citizen groups and businesses informed and lessen any negative impact of  construction.</p>
<p>For example, <abbr>TxDOT</abbr> is converting many  two-way access roads along the interstate to one way to improve safety. To  business owners situated beside I-35, the change can seem threatening because,  in the short term at least, it potentially changes customer access to their  stores.</p>
<p>&ldquo;Our job is to talk through the entire  process with the business owner,&rdquo; says <abbr>TTI</abbr> Research Engineer Jim Dale, lead  mobility coordinator on the project. &ldquo;We let them know we understand their  concerns and help them see the longer-term benefits of the changes.&rdquo;</p>
<p>Helping <abbr>TxDOT</abbr> get the word out is one  of two major jobs for <abbr>TTI</abbr> on the project. The Institute developed a  communications plan for the department and has done everything from designing  flyers, truck stop signs and email alerts to organizing public meetings and  writing, editing and distributing <em>My 35 Central Texas News</em>, a  monthly newsletter aimed at keeping interested parties informed.</p>
<p>&ldquo;Whatever means we use, our main goal  is to get information into the hands of citizens and business owners so they  can make the best decisions possible for their travel needs,&rdquo; says Dale. &ldquo;And  very soon we’ll be getting the word out in a whole new way.&rdquo;</p>
<h2 id="real-time">Getting the Word Out in Real Time</h2>
<div id="attachment_10004" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3my35web-lg.jpg" rel="shadowbox[sbpost-9879];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3my35web.jpg" alt="screenshot of the My35.org website" title="" width="240" height="161" class="size-full wp-image-10004" /></a><p class="wp-caption-text"><a href="http://my35.org/" style="color: white; text-decoration: none; border-bottom: none;"><span style="color: white;" title="My35.org website">http://my35.org</span></a></p></div>
<p>What Dale is referring to is a  first-of-its-kind traveler-information system developed by <abbr>TTI</abbr> for the I-35  project. The system integrates several methods for capturing data, forecasts  congestion along the construction route, and provides that information to  everyone who wants it. The system, currently being refined, is a primary  example of how <abbr>TxDOT</abbr> and <abbr>TTI</abbr> are working together to improve transportation in  Texas.</p>
<p>&ldquo;The  purpose of the system is two-fold,&rdquo; explains <abbr>TTI</abbr> Research Scientist Bob Brydia,  principal investigator on the traveler-information project. &ldquo;First, it’ll give  reliable traffic forecasts for I-35 travelers while the expansion project is  under construction. Second, after construction is finished, it’ll form the  basis for a comprehensive traffic management system for <abbr>TxDOT</abbr>’s Waco District.&rdquo;</p>
<p>The  traveler-information system is similar in concept to modern traffic management  systems used in urban areas. The unique aspect is combining construction data  and corridor travel data for a long interstate highway passing through rural  and urban areas. Put simply, the system marries three data-gathering methods  together to create reliable forecasts for travelers:</p>
<ol>
<li>Bluetooth&reg;  technology &#8212; Travelers’ devices (e.g., cell phones, laptops and the GPS systems  in newer cars) are anonymously pinged at point A and point B, giving a reliable  estimate of travel time between the points.</li>
<li>Wavetronix  sensors &#8212; Placed strategically along the corridor at 17 points of high traffic  interaction, such as where a state highway crosses I-35, these sensors capture  traffic volume.</li>
<li>End-of-queue warning systems &#8212; Radar  detectors mounted in orange barrels around work zones measure speeds of  approaching vehicles as they near the work zone, and patterns of slowing  traffic (indicating a backup in traffic flow) are noted.</li>
</ol>
<p><abbr>TTI</abbr> has developed computer algorithms to integrate  this information together to create reliable traffic forecasts, which are then  passed on to travelers. Once the system is fully up and running, travelers will  be able to access reliable forecasts via the Internet of what traffic on I-35  in Waco will be in an hour, before they ever leave Hillsboro, some 40 miles  away.</p>
<p>It sounds simple enough in theory, but  gathering and analyzing the data and creating reliable forecasts are incredibly  complex tasks. And different information systems have to talk effectively with  one another to make sure the information stays accurate and useful by the time  it reaches travelers.</p>
<p>&ldquo;From our perspective, a real success  story of this project is how effectively we’ve been able to interface with  <abbr>TxDOT</abbr>’s LoneStar traffic management system,&rdquo; says Brydia. &ldquo;Using their data  protocols, we feed our information to them, and that helps drive the messages  you see on the portable changeable message signs [<abbr>PCMSs</abbr>].&rdquo; <abbr>PCMSs</abbr> display  traffic forecasts along the roadway.</p>
<p>While  congestion can be inconvenient for travelers, it can also be costly &#8212; in very  real terms &#8212; for big business. Knowing where work zones are, what lanes will be  closed, and when to expect slower travel is vital for companies like Walmart  and H-E-B. They rely on I-35 to get their goods via truck from major  distribution hubs to their brick-and-mortar stores. When you’re talking  perishables, traffic backups can mean the difference between fresh and spoiled  milk &#8212; and that can translate into lost revenue for the company and higher  prices for consumers.</p>
<p>Similarly,  with better information on hand, emergency management services personnel can  get to the scene of an accident sooner. The life-saving potential there really  needs no further explanation.</p>
<p>&ldquo;Right  now, the main way for alerting travelers is via <abbr>PCMSs</abbr> and daily email alerts,&rdquo;  explains Brydia. &ldquo;Very soon we hope to take advantage of social media,  including Twitter, and supply real-time information to <abbr>TxDOT</abbr>’s <a href="http://my35.org/">My35.org website</a>  in the form of a dynamic traffic map.&rdquo;</p>
<p>Jodi Wheatley, Waco District’s  information specialist for the project, acknowledges that without  <abbr>TTI</abbr>’s help, the I-35 expansion effort would have been much tougher.</p>
<p>&ldquo;Reconstructing almost 100 miles of interstate  is a massive job for the department, and at the end of the day we at <abbr>TxDOT</abbr> want  to be as responsive and helpful as we can to our fellow Texans,&rdquo; Wheatley says.  &ldquo;Because of the scope of the project, that would be much more difficult without  <abbr>TTI</abbr>’s logistical support and technical know-how. Maybe even impossible.&rdquo;</p>
</div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>Partners in Transportation Research</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 3" /><p>Volume 48, Number 3<br />September 2012<!-- <br />September 2012--><br /><a href="http://tti.tamu.edu/2012/09/01/partners-in-transportation-research/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;">
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#txdot-tti"><abbr>TxDOT</abbr> Teams with <abbr>TTI</abbr></a></li>
<li><a href="#real-time">Getting the Word Out in Real Time</a></li>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
<blockquote><p>“Reconstructing almost 100 miles of interstate is a massive job for the department, and at the end of the day we at TxDOT want to be as responsive and helpful as we can to our fellow Texans. Because of the scope of the project, that would be much more difficult without TTI’s logistical support and technical know-how. Maybe even impossible.”<br />
  <cite>Jodi Wheatley, TxDOT Waco District information specialist</cite></p></blockquote>
<h2 id="more-info">For more information:</h2>
<address>Bob Brydia<br />
  (979) 845-8140<br />
  <a href="mailto:r-brydia@tamu.edu">r-brydia@tamu.edu</a></address>
</div>

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		<title>Testing Is Key to Roadside Safety</title>
		<link>http://tti.tamu.edu/2012/09/01/testing-is-key-to-roadside-safety/</link>
		<comments>http://tti.tamu.edu/2012/09/01/testing-is-key-to-roadside-safety/#comments</comments>
		<pubDate>Sat, 01 Sep 2012 17:07:40 +0000</pubDate>
		<dc:creator>Tobey</dc:creator>
				<category><![CDATA[Texas Transportation Researcher]]></category>
		<category><![CDATA[Volume 48, Number 3]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[highway signs]]></category>
		<category><![CDATA[pavements]]></category>
		<category><![CDATA[safety]]></category>
		<category><![CDATA[skid rigs]]></category>
		<category><![CDATA[testing]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9875</guid>
		<description><![CDATA[For the last four decades, TTI and TxDOT have ensured that wet-weather travel on the state’s 80,000 miles of roadways is safe — thanks to evaluating highly sophisticated and seldom-seen pieces of machinery.]]></description>
				<content:encoded><![CDATA[<p>Working together on a host of projects over the years, Texas A&amp;M Transportation Institute (<abbr>TTI</abbr>) researchers at the Riverside Campus and Texas Department of Transportation (<abbr>TxDOT</abbr>) engineers have discovered innovative solutions involving the safety, installation and maintenance of the state’s seemingly endless number of highway signs. And, for the last four decades, the team has ensured that wet-weather travel on the state’s 80,000 miles of roadways is safe &#8212; thanks to a little-known but vital process of evaluating highly sophisticated and seldom-seen pieces of machinery built just for that purpose.</p>
<h2 id="skid-rigs">Skid Rigs and <abbr>TTI</abbr>’s Central/Western Field Test and Evaluation Center</h2>
<div id="attachment_9981" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3skid-rig1-lg.jpg" rel="shadowbox[sbpost-9875];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3skid-rig1-lg.jpg" alt="Kocman reviewing computer data." title="" width="240" height="158" class="size-full wp-image-9981" /></a><p class="wp-caption-text">TTI Technician Robert Kocman reviews computer data from  the Area Reference Friction Measurement System.</p></div>
<p><abbr>TxDOT</abbr> owns seven friction measurement systems, commonly called skid rigs. At a price tag of $200,000 each, skid rigs consist of a heavy-duty pickup truck and trailer equipped with high-tech systems designed to measure the friction characteristics of pavement.</p>
<p>&ldquo;Texas and every state in the country are constantly fighting friction loss: an invisible and extremely dangerous enemy,&rdquo; <abbr>TTI</abbr> Senior Research Specialist Dick Zimmer explains. &ldquo;Over time, pavements can deteriorate and become slick from wear, and when they’re wet, it’s a recipe for disaster. Pavement is funny. You can’t just look at it and tell it’s dangerous. You have to test it.&rdquo;</p>
<div id="attachment_9983" class="wp-caption alignright" style="width: 250px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3skid-rig2-lg.jpg" rel="shadowbox[sbpost-9875];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3skid-rig2.jpg" alt="TTI&#039;s skid rig being pulled behind a pickup truck during testing." title="" width="240" height="141" class="size-full wp-image-9983" /></a><p class="wp-caption-text">TTI’s skid rig in action at the Riverside Campus.</p></div>
<p>To test the pavements, <abbr>TxDOT</abbr> uses its skid rigs to drive over half of its entire road system each year, says Magdy Mikhail, <abbr>TxDOT</abbr>’s director of the Pavement and Materials Systems Branch. &ldquo;If the testing shows that a pavement is losing friction, then we determine what maintenance is required &#8212; like a new seal coat for example.&rdquo;</p>
<p>But how does <abbr>TxDOT</abbr> know that its skid rigs are working properly?</p>
<p>&ldquo;In 1971, <abbr>TTI</abbr> opened the Field Test and Evaluation Center, located here at the Riverside Campus. In a nutshell, we test skid rigs, not only from Texas but from numerous other states as well,&rdquo; explains Zimmer, who’s been evaluating these skid rigs at <abbr>TTI</abbr> for more than 40 years. He’s also served as the lead author on several related <abbr>ASTM</abbr> standards.</p>
<p>In 2011, the facility &#8212; now known as the Central/Western Field Test and Evaluation Center &#8212; was accredited by the American Association for Laboratory Accreditation for ISO 17025. &ldquo;We’ve conducted nearly 500 of these evaluations and calibrations over the years,&rdquo; Zimmer says.</p>
<p>That evaluation is a 3- to 5-day process that includes tests for compliance to <abbr>ASTM</abbr> standards and comparison of the state’s skid rig to <abbr>TTI</abbr>’s reference skid rig. They are both driven 108 times on three different types of pavements at three different speeds. The measurements of the two friction systems are initially compared. The numerous components are checked, recalibrated and tested again on the track. If maintenance or repair is needed, that work is performed as well.</p>
<p>&ldquo;The public just drives down the road, never thinking of the people, the equipment and the technology that go into testing just one characteristic of our highway system,&rdquo; Zimmer says. &ldquo;It boils down to this: roads get slippery, and slippery roads can be dangerous. That’s why knowledge and prompt maintenance can save lives.&rdquo;</p>
<p>&ldquo;As an agency, we are very fortunate to have a facility like the one at <abbr>TTI</abbr>,&rdquo; Mikhail says. &ldquo;I feel like we are partners in the effort to provide the best and safest roadways possible for Texans. <abbr>TTI</abbr>’s evaluation center is a valuable resource for us.&rdquo;</p>
<h2 id="hwy-signs">Highway Signs and the <abbr>TTI</abbr>/<abbr>TxDOT</abbr> Relationship</h2>
<p>Over the last several years, <abbr>TxDOT</abbr> has discovered it was having problems related to its roadway signs &#8212; ranging from the large 18-foot-wide green guide signs to the much smaller mile-marker signs that cover the state’s transportation landscape.</p>
<p>For example, in West Texas, high-wind events were blowing down large guide signs at a higher than normal rate. In other districts, the use of small signs on slipbase supports was found to affect their crashworthiness.</p>
<p>&ldquo;There were numerous issues we wanted to explore,&rdquo; says <abbr>TxDOT</abbr> Transportation Engineer Doug Skowronek. &ldquo;We organized a panel and developed a list of the various improvements we felt were needed. Many of those items were identified by the maintenance crews across the state responsible for maintaining and installing the signs.&rdquo;</p>
<p>The list continued to grow, and <abbr>TTI</abbr> was awarded a two-year project, headed up by <abbr>TTI</abbr> Research Engineer Roger Bligh.</p>
<p>&ldquo;Many of the design practices that <abbr>TxDOT</abbr> uses for sign mounting were established years ago, and because sign materials and installation methods change, problems sometimes arise,&rdquo; Bligh says. &ldquo;To complicate the issue further, the types of vehicles on the road change over time, as do the operating conditions of our highways.&rdquo;</p>
<p>Skowronek says that the benefits from that two-year project were so great that <abbr>TxDOT</abbr> decided to extend the research for another year so additional issues could be examined. The project, Development Guidance for Sign Design Standards, was recently completed, resulting in an exhaustive 350-page report that identifies problems, findings, conclusions and recommendations.</p>
<p>&ldquo;I was stunned at the detail and thoroughness of the report,&rdquo; Skowronek says. &ldquo;When you look through the report, you realize the work that went into it. It was very well thought out and documented, leaving nothing unanswered.&rdquo;</p>
<p><abbr>TxDOT</abbr> is now in the process of implementing recommendations from the report and expects a safer roadway, more efficient use of time and resources, and a substantial cost savings.</p>
<p>Among the findings and recommendations of the research project are:</p>
<ul>
<li>Fuse plate failures were causing large guide signs to come down during high-wind events, so <abbr>TTI</abbr> developed new wind-load charts that properly account for the fuse plate strength.</li>
<li>The use of expensive and cumbersome vertical supports for large guide signs, called stiffeners, are not needed to achieve proper impact performance of the sign support system.</li>
<li>Researchers determined a minimum area for signs mounted on slipbase supports so that, upon impact, the slipbase works properly and minimizes damage to the impacting vehicle.</li>
</ul>
<div style="width: 574px; margin-left: auto; margin-right: auto;">
  <div id="attachment_9989" class="wp-caption alignnone" style="width: 584px"><a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3fuse-plate-failure1-lg.jpg" rel="shadowbox[sbpost-9875];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3fuse-plate-failure1.jpg" alt="example of a sign showing a fuse plate failure due to wind damage" title="" width="150" height="141" class="size-full wp-image-9989" /></a> <a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3fuse-plate-failure2-lg.jpg" rel="shadowbox[sbpost-9875];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3fuse-plate-failure2.jpg" alt="example of a sign showing a fuse plate failure due to wind damage" title="" width="150" height="141" class="size-full wp-image-9985" /></a> <a href="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3wind-load-chart-lg.jpg" rel="shadowbox[sbpost-9875];player=img;"><img src="http://tti.tamu.edu/wp/wp-content/uploads/2012/09/v48n3wind-load-chart.jpg" alt="TTI developed wind-load chart" title="" width="266" height="141" class="size-full wp-image-9987" /></a><p class="wp-caption-text">Wind damage causes fuse plate failures in signs like the ones shown here. TTI developed a wind-load chart to help reduce wind-induced failures of large guide signs.</p></div>
</div>
<p>&ldquo;Obviously, we rely on <abbr>TTI</abbr> when it comes to these devices along our roadways,&rdquo; Skowronek says of the relationship between the two agencies. &ldquo;<abbr>TTI</abbr> helped us create the standards we use to install and maintain these signs and roadside devices. We come up with a &lsquo;what if&rsquo; scenario, and <abbr>TTI</abbr> comes up with the answers.&rdquo;</p>
</div><!-- post --><div id="researcher-info-sidebar"><h4 class="widgettitle">This Issue</h4><h3>Partners in Transportation Research</h3><img width="220" height="285" src="http://tti.tamu.edu/wp/wp-content/uploads/2012/10/v48n3cover.jpg" class="attachment-sidebar-thumbnail wp-post-image" alt="Texas Transportation Researcher: Volume 48, Number 3" /><p>Volume 48, Number 3<br />September 2012<!-- <br />September 2012--><br /><a href="http://tti.tamu.edu/2012/09/01/partners-in-transportation-research/">Issue Overview</a></p></div><!-- .researcher-info-sidebar --><div class="researcher-sidebar" style="margin-top: 20px;">
<div class="on-this-page">
<h2 class="otp">On this page:</h2>
<ul>
<li><a href="#skid-rigs">Skid Rigs and <abbr>TTI</abbr>’s Central/Western Field Test and Evaluation Center</a></li>
<li><a href="#hwy-signs">Highway Signs and the <abbr>TTI</abbr>/<abbr>TxDOT</abbr> Relationship</a></li>
<li><a href="#more-info">For More Information</a></li>
</ul>
</div>
<div class="researcher-sidebar-content">
<blockquote><p>“Texas and every state in the country are constantly fighting friction loss: an invisible and extremely dangerous enemy. Over time, pavements can deteriorate and become slick from wear, and when they’re wet, it’s a recipe for disaster. Pavement is funny. You can’t just look at it and tell it’s dangerous. You have to test it.”<br />
  <cite>Dick Zimmer, TTI senior research specialist </cite></p></blockquote>
<blockquote><p>“Obviously, we rely on TTI when it comes to these devices along our roadways. TTI helped us create the standards we use to install and maintain these signs and roadside devices. We come up with a ‘what if’ scenario, and TTI comes up with the answers.”<br />
<cite>Doug Skowronek, TxDOT transportation engineer</cite></p></blockquote>
<h2 id="more-info">For more information:</h2>
<address>Dick Zimmer<br />
  (979) 845-6388<br />
  <a href="mailto:d-zimmer@ttimail.tamu.edu">d-zimmer@ttimail.tamu.edu</a><br />
  <span class="strong">or</span><br />
  Roger Bligh<br />
  (979) 845-4377<br />
  <a href="mailto:rbligh@tamu.edu">rbligh@tamu.edu</a></address>
</div>

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		<title>Adding Highway Shoulders, Width, Reduce Crash Numbers and Save Lives</title>
		<link>http://tti.tamu.edu/2012/08/09/tti-study-analyzes-roadway-improvements/</link>
		<comments>http://tti.tamu.edu/2012/08/09/tti-study-analyzes-roadway-improvements/#comments</comments>
		<pubDate>Thu, 09 Aug 2012 19:55:52 +0000</pubDate>
		<dc:creator>Chris Sasser</dc:creator>
				<category><![CDATA[MyTTI News]]></category>
		<category><![CDATA[News]]></category>
		<category><![CDATA[roadway safety]]></category>
		<category><![CDATA[roadway shoulders]]></category>
		<category><![CDATA[safety]]></category>

		<guid isPermaLink="false">http://tti.tamu.edu/?p=9285</guid>
		<description><![CDATA[AUSTIN &#8212; Texas highways are safer now thanks to hundreds of projects completed in the last few years to add shoulders, width on more than 1,000 miles of rural, two-lane highways. An analysis of 189 Texas Department of Transportation (TxDOT) road projects around the state shows that wider pavements make highways safer and result in [...]]]></description>
				<content:encoded><![CDATA[<p>AUSTIN &#8212; Texas highways are safer now thanks to hundreds of projects completed in the last few years to add shoulders, width on more than 1,000 miles of rural, two-lane highways.</p>
<p>An analysis of 189 Texas Department of Transportation (TxDOT) road projects around the state shows that wider pavements make highways safer and result in fewer crashes.</p>
<p>Recently, TxDOT asked the Texas Transportation Institute (TTI) to analyze and review three years of pre-and post-improvement data on more than a thousand miles of narrow two-lane highways that had been widened. The numbers show that on 1,159 miles of recently added highway shoulders, there were 133 fewer fatalities and 895 fewer injuries compared to prior to widening.</p>
<p>TTI has estimated that these projects could save up to 44 lives each year or 880 lives over 20 years&#8211; and prevent 298 injuries or 5960 injuries over the same time period.</p>
<p>&#8220;Safety is our top priority,&#8221; said Phil Wilson, TxDOT executive director. &#8220;The agency’s roadway widening initiative has been a tremendous success, both for increasing safety on Texas highways and potentially saving billions of dollars associated with fatal crashes and sustained injuries.&#8221;</p>
<p>In 2003, voters gave the Texas Transportation Commission the authority to issue $3 billion in bonds to pay for state highway improvements. The law stipulated that 20 percent of that amount must be used to fund projects that would reduce crashes or correct or improve hazardous locations on the state system. The Texas Legislature later increased the bonding authority to $6 billion.</p>
<p>TTI is also analyzing recently completed projects &#8212; mostly from the 2009 safety bond initiative &#8212; Among the 37 completed widening projects from that bond initiative, fatalities were reduced by an average of five annually. The $29 million construction cost for those 37 projects &#8212; through the 20-year life of the project &#8212; could save an estimated $456.4 million from fewer fatalities and serious injuries.</p>
<p>&#8220;I am proud of the role I played in creating the Safety Bond Program, and I sincerely thank TxDOT and the people of Texas for making it happen,&#8221; said Senator Steve Ogden, R-Bryan.</p>
<p>TxDOT plans on expanding these efforts in the future in areas where widening improvements are needed.</p>
<p>For more information, contact Robert Wunderlich at  <a href="mailto:r-wunderlich@ttimail.tamu.edu">r-wunderlich@ttimail.tamu.edu</a> or (972) 994-0433 Ext. 13105.</p>
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