﻿ 十字路口的交通流优化 The Optimization for Traffic Management of Crossroad

Open Journal of Transportation Technologies
Vol.06 No.03(2017), Article ID:20568,8 pages
10.12677/OJTT.2017.63011

The Optimization for Traffic Management of Crossroad

Tianxiong Chen, Bin Chen, Zheng Zhang*

Institute of Solid Mechanics, School of Aeronautic Science and Engineering, Beihang University, Beijing

*通讯作者。

Received: Apr. 27th, 2017; accepted: May 11th, 2017; published: May 19th, 2017

ABSTRACT

Traffic management is not only the bottleneck of urban transportation, but also a significant subject of development of the economy and society. A lot of researches focus on this subject at home and abroad, however, most of which are mainly based on the empirical formula. A universal method is required to accurately assess the optimization of traffic flow at the intersection. This work presented the vehicle traffic (pass the crossroad) model constructed by theoretical mechanics method, through field investigation. Discussions were conducted on the relationship among the duration of traffic signal conversion, the traffic flow (the distance between vehicles and the starting style), the security distance between vehicles, the relationship of Car-following, and so on. Consequently, the optimization choice of Car-following was obtained, which provides a better theoretical method for the traffic management of crossroad.

Keywords:Safety Distances, Car-Following Theory, Maximum Traffic Flow, Optimization of Traffic Lights, Line Distance

Copyright © 2017 by authors and Hans Publishers Inc.

1. 引言

2. 经典交通流理论与模型简介

(1)

(2)

(3)

(4)

3. 理论力学建模

3.1. 安全跟驰距离

(5)

, (6)

(7)

(8)

(9)

3.2. 最大车间距

(10)

3.3. 启动时的迟滞时间和车间距的关系

(11)

3.4. 一般情况下的后车启动模式

, (12)

(13)

(14)

(15)

(16)

3.5. 一次绿灯时长内通过的车流量计算流程

3.6. 大流量情况的数值分析与模拟

Figure 1. Flow chart

Figure 2. The relationship between vehicle flow and time of red light at different car distance

Figure 3. The relationship between vehicle flow and car distance

3.7. 模型对比分析

Figure 4. The relationship between vehicle flow and time of red light when the car distance is 1.6 m

4. 结论

The Optimization for Traffic Management of Crossroad[J]. 交通技术, 2017, 06(03): 86-93. http://dx.doi.org/10.12677/OJTT.2017.63011

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