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You are here: Home / Archives for retroreflectivity

retroreflectivity

Seeing the Road in Low-Visibility Conditions

June 1, 2022

Seeing the road is an essential component of safe driving. Drivers depend on a continuous flow of information as they move along the roadway to properly position their vehicle. Centerline and edge-line markings delineate the vehicle lane for drivers, while other markings such as stop bars and railway crossings provide key safety information and alert […]

Filed Under: Texas Transportation Researcher, Volume 58, Number 2 Tagged With: human factors, pavement markings, retroreflectivity, safety, visibility

Unique Transportation-Related Curriculum Being Developed to Inspire Students

March 22, 2018

After years of inspiring students with their demonstrations of street sign and pavement marking retroreflectivity, researchers at the Texas A&M Transportation Institute (TTI) have developed a no-cost curriculum that will soon be available to teachers across the country. The curriculum project was made possible with funding from the Safety Through Disruption (Safe-D) University Transportation Center […]

Filed Under: News Tagged With: Curriculum, retroreflectivity, STEM, workforce, workforce development

TTI Provides Guidance for Overhead Sign Lighting

September 22, 2016

One of the major emerging technologies in highway safety has been the improvement of the types of retroreflectivity sheeting used on overhead signs on roadways. Modern signs are very efficient at returning light back to the driver, creating a much safer nighttime driving environment. Because of this, many departments of transportation are opting to remove […]

Filed Under: News Tagged With: overhead sign, Paul Carlson, retroreflectivity, roadway lighting

TTI Researchers Identify Elusive Relationship Between Safety and Pavement Marking Brightness

April 30, 2014

In what is described as a key breakthrough regarding safer nighttime driving, Texas A&M Transportation Institute (TTI) researchers have identified a technique for developing safety-based retroreflectivity criteria for pavement markings. The technique, described in a Transportation Research Board paper submitted by TTI Senior Research Engineer Paul Carlson and TTI Associate Research Scientist Raul Avelar, quantifies […]

Filed Under: News Tagged With: Paul Carlson, retroreflectivity, Transportation Research Board

Rural Roadway Signage: When Brighter Is Not Always Better

February 26, 2014

Ever since agencies started using uniform traffic signs, the conventional thinking concerning nighttime visibility is that brighter is better. But a recent Texas A&M Transportation Institute (TTI) research project revealed that signs along rural highways can be so bright that they cause disability glare to the point of reduced hazard detection distances, which can be […]

Filed Under: News Tagged With: Paul Carlson, retroreflectivity, rural road signage

New Study Shines Light on Pavement Markings and Safety

May 1, 2013

When you drive at night and your headlights illuminate a lane marking, it makes you feel safer, right? After all, bright pavement markings are designed to help you stay in your lane and prevent you from running off the roadway. Called retroreflectivity, special materials in edge lines and lane lines create the brightness. With age […]

Filed Under: News Tagged With: Paul Carlson, pavement markings, retroreflectivity, visibility, Visibility Research Laboratory

Carlson Featured in Traffic Technology International

January 30, 2013

Texas A&M Transportation Institute Research Engineer Paul Carlson was recently featured in the January issue of Traffic Technology International. The article is related to senior drivers and has a section on visibility, which Carlson is noted throughout the country for his research.  Carlson is the division head for the Operations and Design Division and also leads TTI’s Visibility […]

Filed Under: News Tagged With: retroreflectivity, Traffic Technology International, visibility, Visibility Research Laboratory

Looking into the Retroreflective Glass

March 1, 2012

As the paint–glass bead mixture used in roadway markings for light retroreflection is applied to the road, degrades over time, and is reapplied, what effect does it have on the people handling it and on our environment?

Filed Under: Texas Transportation Researcher, Volume 48, Number 1 Tagged With: environment, glass beads, heavy metals, pavement markings, retroreflectivity, safety

SPOTLIGHT: The Visibility Research Laboratory

June 1, 2010

“A dark and stormy night” is more than a clichéd way to introduce a story — it’s a dangerous driving scenario when the visibility of road signs becomes critical for safe passage. Nighttime traffic fatality rates are three times higher than their daytime equivalents. While fatigue and alcohol play important roles in nighttime crashes, Texas […]

Filed Under: Texas Transportation Researcher, Volume 46, Number 2 Tagged With: pavement markings, retroreflectivity, roadway lighting, Visibility Research Laboratory

NOW: Marking the Way: Research project improves performance of raised pavement markers

June 1, 2010

The worst of driving conditions calls for the best of roadway markers. And with their reflective properties, retroreflective raised pavement markers (RRPMs) have guided many nervous drivers safely to their destination on rainy nights. That’s why RRPMs‘ durability and performance are of critical importance to the Texas Department of Transportation (TxDOT). A few years ago, […]

Filed Under: Texas Transportation Researcher, Volume 46, Number 2 Tagged With: pavement markings, retroreflectivity

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