The operation of a mobile retroreflectometer is significantly more complicated than the operation of a portable retroreflectometer. There are many different factors — such as mechanical equipment, operator, and software — that can affect the accuracy of mobile retroreflectivity measurements. Furthermore, it can be challenging to assess the accuracy of mobile measurements. To increase confidence … Read More
Traffic Operations
National Geotechnical Experimentation Site
The National Geotechnical Experimentation Site on Texas A&M University’s RELLIS Campus is available for large-scale experiments. At these unique sites, full-scale walls, shallow and deep foundations, culverts, anchors, pipes, and other structures have been instrumented, calibrated, built, and monitored over a period of 20 years.
Hardware-in-the-Loop (HITL) Simulation Testbed
Working in conjunction with researchers at Purdue University, TransLink developed a methodology for linking a microscopic simulation model with actual field equipment. Known as hardware-in-the-Loop (HITL), the method provided a mechanism for translating the digital events in a software simulation into physical events that could be recognized by a piece of hardware. These capabilities have … Read More
Visibility Research Laboratory
TTI’s Visibility Research Laboratory, measuring 15 feet by 125 feet, is the first of its kind in a university setting. Located on the first floor of TTI’s State Headquarters and Research Building, the laboratory can be used to perform photometric and color measurements of sign sheeting, pavement markings, retroreflective raised pavement markings and other retroreflective … Read More