Driving Speed Analysis Using Real-Time Traffic Light Status Information at Signalized Intersections

Abstract

This study aims to analyze driver behavior when traffic light status information is provided to the in-vehicle systems of individual vehicles. In the case where signal information was provided when the vehicle was approaching an intersection in a red-light state, a statistically significant difference in both the driving speed and standard deviation of the speed was observed. The driving speed was 2.770 km/h, and the standard deviation of the speed increased by 0.153 km/h. In addition, an average speed increase of 2.751 km/h was observed when the remaining time information was provided, then when it was not. When only light was provided, the speed increased by 1.549 km/h; this was statistically insignificant.

Keywords

• traffic light information
• remaining time of the current traffic light
• traffic signal with countdown indicator
• driving behavior
• SPaT message