基于相位优先度规则的单点公交优先控制策略

Isolated Transit Signal Priority Control Strategy Based on Phase Priority Degree Rule

摘要:

为了丰富决定信号切换的关键交通事件，并进行合理平衡和协调，达到多目标优化，提出了相位优先度的概念，根据关键交通事件的触发计算相位优先度，在此基础上设计了一种在双环相位结构下基于相位优先度规则的单点公交优先信号控制策略，该规则包括起始相位选择规则、屏障内相位切换规则和屏障间相位切换规则.仿真测试和分析结果表明，相对定时控制、基本感应控制，该控制策略可以有效地减少公交车辆延误，社会车辆也同时受益，达到多目标主体的利益平衡；与基于相位优先度规则的自适应控制相比，该控制策略保证了公交优先的有效性.

Abstract:

In order to enrich the key traffic events, which determine signal transition, and balance them to achieve multi objective optimization, the concept of phase priority degree is proposed. Phase priority degree is calculated by key traffic events triggering. Under the dual ring phase structure, the isolated transit signal priority control strategy based on phase priority degree rules is introduced. The logic rules include rules for initial green combination generation, rules for phase transition in barriers and rules for phase transition between barriers. Simulation analysis shows that in comparison with the fixed time control and basic actuated control, the proposed control strategy can reduce delay of transit vehicles efficiently, delay of general vehicles is also reduced to achieve benefit balance among multi objectives; compared to adaptive control based on phase priority degree, the proposed control strategy insures the effectiveness of transit priority.