Dynamic speed feedback signs can get drivers to slow down

The results of a new NHTSA study, conducted through the National Cooperative Research and Evaluation Program (NCREP), confirmed that when you show a driver how fast they are going over the posted speed limit, they are likely to slow down. Using Dynamic Speed Feedback Signs in a variety of contexts and locations, researchers found that in all cases, vehicle speeds decreased, leading them to conclude that the signs can be an effective tool for saving lives.

A two-page Traffic Tech summary is available online. The full report, Effectiveness of Dynamic Speed Feedback Signs, Vol. 1: Literature Review and Meta-Analysis, and the Vol. 2: Appendices and Annotated Bibliography is available for download.

Learn more about this and other Behavioral Traffic Safety Cooperative Research Projects on their website.