Researchers: Melisa Finley, Adam Pike, and Jeff Miles
TTI is currently conducting two TxDOT research projects that include evaluations of LED enhanced signs. In project 0-6407, TTI is investigating the effectiveness of LED enhanced stop paddles versus standard, un-lit paddles used by crossing guards. All paddles were 18 inches in diameter and fabricated with high intensity sign sheeting (ASTM Type III). All of the evaluated devices are listed below.
 Treatment 1 - Standard Un-lit |
 Treatment 2 - 8 Flashing Red Border Lights |
 Treatment 3a - Steady-Burn Red Full Border Lights |
 Treatment 3b - Flashing Red Full Border Lights |
 Treatment 4 - Flashing Red Vertically Centered |
 Treatment 5 - Steady-Burn White Forming Legend |
In project 0-6462, TTI is evaluating different traffic control device alternatives for use at a rural, stop-controlled intersection along with evaluating reasonable sequence(s) for implementing progressively more expensive devices. One type of traffic control device being investigated is large LED enhanced signs (some examples shown below).
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