DRIVER PERFORMANCE THROUGH THE YELLOW PHASE USING VIDEO CAMERASAT URBAN SIGNALIZED INTERSECTIONS

Abstract

The main objective of this research is to examine the influencing parameters of driver performance through the yellow phase at urban signalized intersections with and without red-light running (RLR) cameras. Data were collected to include the intersection type, vehicle type, turning movement type, whether the vehicle position is in a platoon or not, presence of RLR cameras, green light flash devices, pedestrians, and pavement markings. A total of 2168driver observations were extracted. Only 33.3% of the drivers stopped before the stop line, 59% of the drivers passed the intersection through the yellow phase, and7% of the drivers committed RLR violations. The results showed that drivers were morelikely to stop before the stop line through the yellow phase at locations with RLR cameras, green light flash devices, pavement markings, where pedestrianswere present, and at a four-leg intersection. Chi-square tests indicated that all parameters had a significant impact on driver performance, except for the type of turning movement.

Keywords

• driver behavior
• signalized intersections
• red-light running
• yellow phase