ABSTRACT This paper proposes an improved layout for the Displaced Left-turn (DLT) intersection by combining the conventional DLT intersection with protected left-turn phases, based on the safe-crossing requirements of pedestrians and non-motorized vehicles. The delay and stops are weighted to form an integrated performance index (PI) in a real-time vehicle-to-infrastructure communication environment. The PI models, pertaining to all vehicles in non-DLT lanes, DLT lanes and shared through-right lanes are established based on the improved DLT intersection in unsaturated traffic conditions. In addition, a dynamic optimized method of traffic signal timing parameters is constructed based on minimizing average PI per vehicle and considering the traffic signals’ coordination at the main intersection and left-turn crossovers. The operational performance of the optimized method is validated using data collected at an intersection in Harbin, China.

中文翻译：

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非饱和交通条件下改进位移左转交叉口设计的信号控制方法及性能评价

摘要本文根据行人和非机动车辆的安全穿越要求，通过将传统的 DLT 交叉口与受保护的左转阶段相结合，提出了一种改进的左转 (DLT) 交叉口布局。在实时车辆到基础设施通信环境中，延迟和停止被加权以形成综合性能指数 (PI)。PI 模型适用于非 DLT 车道、DLT 车道和共享直通车道中的所有车辆，基于改进的 DLT 交叉口在非饱和交通条件下建立。此外，基于最小化每辆车的平均PI并考虑主要交叉口和左转交叉路口的交通信号协调，构建了一种交通信号配时参数的动态优化方法。