Estimating rear-end accident probabilities at signalized intersections: a comparison study of intersections with and without green signal countdown devices.

Conclusions: GSCDs helped shorten indecision zones and reduce rear-end collisions near the stop line during the yellow interval, but they easily resulted in risky car following behavior and much higher rear-end collision probabilities at indecision zones during both flashing green and yellow intervals. GSCDs are recommended to be cautiously installed and education on safe driving behavior should be available. PMID: 24867568 [PubMed - in process]
Source: Traffic Injury Prevention - Category: Occupational Health Authors: Tags: Traffic Inj Prev Source Type: research