RightTurn Assessment Technique of Intersection Based on Event Chain

Abstract:

This paper aimed to help to provide a more comprehensive evaluation of the intersection taking into account both safety and efficiency. The conflicts during turningright processes in the typical fourphase intersections were studied. The rightturn event chain model was built. And traffic conflicts and delay between rightturn motor vehicles and other motor vehicles, nonmotor vehicles, and pedestrians were analyzed in detail. The reliability method was introduced to quantify the safety from the perspective of probability while traffic delay was used to measure the efficiency. Besides, the Monte Carlo method was used to simulate the intersections to effectively calculate the reliability and delay of event chains. When assessing the intersections, the public psychological tolerance and intersection service level were referred to. This study can provide scientific basis for intersection optimization.

Key words:intersection assessment; event chain; conflict; reliability; delay