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Home » Projects » LED Enhanced Signs

LED Enhanced Signs

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 1 - Standard Un-lit

Treatment 2 - 8 Flashing Red Border Lights

Treatment 2 - 8 Flashing Red Border Lights

Treatment 3 - Steady-Burn Red Full Border Lights

Treatment 3a - Steady-Burn Red Full Border Lights

Treatment 3b - Flashing Red Full Border Lights

Treatment 3b - Flashing Red Full Border Lights

Treatment 4 - Flashing Red Vertically Centered

Treatment 4 - Flashing Red Vertically Centered

Treatment 5 - Steady-Burn White Forming Legend

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).

LED enhanced sign - indicating road direction change to the left LED enhanced sign - indicating no right-hand turns LED enhanced sign - Stop sign with 8 flashing border lights
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