Optimization Method of Intersection Signal Coordinated Control Based on Vehicle Actuated Model

Abstract

Traditional timing green wave control with predetermined cycle, split, and offset cannot adapt for dynamic real-time traffic flow. This paper proposes a coordinated control method for variable cycle time green wave bandwidth optimization integrated with traffic-actuated control. In the coordinated control, green split is optimized in real time by the measured presence of arriving and/or standing vehicles in each intersection and simultaneously green waves along arterials are guaranteed. Specifically, the dynamic bound of green wave is firstly determined, and then green early-start and green late-start algorithms are presented respectively to accommodate the fluctuations in vehicle arrival rates in each phase. Numerical examples show that the proposed method improves green time, expands green wave bandwidth, and reduces queuing.

Enhancing Traffic Sustainability: An Analysis of Isolation Intersection Effectiveness through Fixed Time and Logic Control Design Using VisVAP Algorithm

“…The activated controllers can be programmed to accommodate: variable phase sequences (e.g., optional protected left-turn phases), variable green times for each phase, and variable cycle length induced by variable green times [49]. In general, SATSC selects phases in sequences according to their order (if there are 1, 2, 3 phases, the signal will be executed in the order 1, 2, 3), following the operational principle of ATSC's operation.…”