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A Mixed-Flow Cellular Automaton Model for Vehicle Nonstrict Priority Give-Way Behavior at Crosswalks
Journal of Advanced Transportation ( IF 2.3 ) Pub Date : 2020-12-29 , DOI: 10.1155/2020/5073023
Yunxuan Li 1, 2, 3 , Zeyang Cheng 1, 2, 3 , Jian Lu 1, 2, 3 , Lin Zhang 4
Affiliation  

The vehicle nonstrict priority give-way behavior (VNPGWB) is a common part of traffic interaction between motorized and nonmotorized vehicles in many countries. This study proposes a mixed-flow cellular automaton model to simulate the passing of vehicles in front of bicycles at crosswalks. The mixed-flow model combines a vehicle model with a bicycle model, using nonstrict priority give-way and strict give-way two driving behaviors defined as relating to the decision point rule and the launching rule, respectively. Simulation results showed that as the vehicle and bicycle inflow rates increased, a critical inflow rate divided vehicle and bicycle traffic flow into free flow and saturated flow conditions. The values of vehicle saturation flow decreased from 0.34 to 0.05, and the values of bicycle saturation flow decreased from 0.54 to 0.44, indicating that the mixed traffic flow has a negative effect on vehicle and bicycle saturated flow. Results also showed that VNPGWB effectively improves vehicle saturation flow over that of the strict give way. The advantage of VNPGWB is more significant when vehicles and bicycles are in saturation traffic flow.

中文翻译:

人行横道车辆非优先优先放行行为的混合流元胞自动机模型

车辆非严格优先让步行为(VNPGWB)是许多国家的机动车辆和非机动车辆之间交通交互的常见部分。这项研究提出了一个混合流元胞自动机模型,以模拟人行横道上车辆在自行车前的通过。混合流模型将车辆模型与自行车模型结合在一起,分别使用了非严格优先级让步和严格回程两种驾驶行为,分别定义为决策点规则和发射规则。仿真结果表明,随着车辆和自行车流量的增加,临界流量将车辆和自行车的流量分为自由流量和饱和流量条件。车辆饱和流量的值从0.34降低到0.05,自行车饱和流量的值从0.54降低到0.44,表示混合交通流量对车辆和自行车的饱和流量有负面影响。结果还表明,VNPGWB比严格的让路有效地改善了车辆的饱和流量。当车辆和自行车处于饱和交通流中时,VNPGWB的优势更加明显。
更新日期:2020-12-29
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