Researchers: Kay Fitzpatrick, Ph.D, P.E. and  Susan Chrysler, Ph.D.

Sponsor: Texas Department of Transportation

In this effort, Human Factors Group researchers used TTI’s new Visibility Research Laboratory to study the conspicuity of signs enhanced with light-emitting diode (LED) treatments. This is in support of a TxDOT-sponsored project examining novel traffic control device treatments for rural intersections. The extended viewing distance in the visibility lab provides an opportunity to simulate nighttime sign viewing using scaled-down sign images displayed on a large computer monitor. The lab enables the researchers to test many more candidate sign designs than would be feasible in a field test setting. Another advantage is that testing can take place during daylight hours, providing an added measure of safety and comfort for research participants and staff. A night test of sign detection, recognition, and legibility was also conducted at the Riverside Campus closed course as part of this project.

For more information contact Kay Fitzpatrick.