Traffic Safety Analysis of Intersection Based on Data from Red Light Enforcement System

Abstract

The paper presents selected analysis of traffic safety of the intersection equipped with a red light enforcement system. Violations recorded by the system are a substantial breach of the traffic participants’ safety and its effects, in the form of an incident or accident, have unacceptable social and economic dimension. Authors presented the scale of existing traffic violations and described relations between event occurrence and factors such as daytime, traffic speed and the time between the beginning of red signal and moment of passing the stop line. In addition, the paper proposes a measure to evaluate the traffic risk level as a function of time of passing the stop line and the speed of vehicle enters the intersection. This measure was mainly related to the indicator of traffic safety level of conflicting movements at signalized intersection (intergreen time) and the maximum allowed speed at the intersection entry.