This report describes the findings of a study evaluating a variety of proposed signs for the Manual on Uniform Traffic Control Devices (MUTCD). The signs investigated included: a series of light rail signs, Lane Ends, Jogger, Cellular Phone Emergency Number, Rural Mail Delivery Route, Share the Road with Bikes, Electric Vehicle Charging Station and Scenic Byways Designation. The study included determination of comprehension and recognition distance for two versions of the signs under investigation, using 24 older (65+) and 24 young/middle-aged (21-45) licensed drivers. Recommendations are made for which signs should be considered for the MUTCD and for further research needed.
The development of minimum retroreflectivity (MR) levels for traffic signs has been going on for more than two decades, but it was significantly accel...
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United States Department of Transportation
[PDF-2.87 MB]
