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Evaluation of Enhanced Brake Lights Using Surrogate Safety Metrics: Task 1 Report

Further Characterization and Development of Rear Brake Light Signals -- Significant performance gains can be achieved via use of LED signal approaches that both flash and increase signal intensity or lamp brightness.

Based on all data available, it appears that both human behavior occurring in rear-end crashes and the technology available can be matched to help solve the problem. Considering how many of these crashes there are and how costly they are, indications suggest that appropriate rear lighting may have a substantial role to play in reducing the number of these crashes as well as the severity of those that do occur. 

Results indicate that newer rear signaling designs can be very effective at drawing drivers’ eyes back to the forward roadway, and that flashing and brightness are two important signal properties moderating effectiveness (attention-getting). Significant performance gains can be achieved via use of LED signal approaches that both flash and increase signal intensity or lamp brightness.