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Request a Traffic Sign Brightness White Paper

Read this synopsis of a study on how the city of Albuquerque reduced nighttime crashes with a systematic traffic sign upgrade. In this example, researchers were able to identify separate treatment and control sites, in order to isolate the effect of traffic sign brightness as it relates to nighttime driver safety.

  • White Paper entitled Traffic Sign Brightness, Performance Measures and Driver Safety: A Synopsis

    You will learn:


    • Why ASTM D4956 Type XI–compliant sheeting can improve nighttime safety
    • Sign luminance needs for optimal sign legibility
    • Optimisation of sign information acquisition time
    • Sign luminance and the effect on safety 

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