NHTSA is requesting comments on a new report, Effectiveness of Amber Rear Turn Signals for Reducing Rear Impacts. The report discusses the effect of rear turn signal color on the likelihood of being involved in a rear-end crash. FMVSS 108 allows rear turn signals to be either red or amber in color. The primary conclusion is that amber rear turn signals are 5.3% more effective than red rear turn signals at preventing involvement in crashes where a careful driver would typically use the turn signals.
The technical report is available at http://www-nrd.nhtsa.dot.gov/Pubs/811115.PDF.
Comments will be accepted through September 6, 2009
