Mixed traffic flow modeling near Chinese bus stops and its applications  

作　　者：杨小宝 四兵锋 环梅 

机构地区：[1]Key Laboratory for Urban Transportation Complex Systems Theory and Technology of Ministry of Education(Beijing Jiaotong University)

出　　处：《Journal of Central South University》2012年第9期2697-2704,共8页中南大学学报（英文版）

基　　金：Project(2012CB725400) supported by the National Basic Research Program of China;Projects(70901005, 71071016, 71131001) supported by the National Natural Science Foundation of China;Project(2011JBM055) supported by the Fundamental Research Funds for the Central Universities of China

摘　　要：To determine how bus stop design influences mixed traffic operation near Chinese bus stops,a new theoretical method was developed by using additive-conflict-flows procedure.The procedure was extended from homogeneous traffic flow to mixed traffic flow.Based on the procedure and queuing theory,car capacity and speed models were proposed for three types of bus stops including curbside,bus bay and bicycle detour.The effects of various combinations of bus stop type,traffic volume,bus dwell time,and berth number on traffic operations were investigated.The results indicate that traffic volume,bus dwell time and berth number have negative effects on traffic operations for any type of bus stops.For different types of bus stops,at car volumes above approximately 200 vehicles per hour,the bus bay and bicycle detour designs provide more benefits than the curbside design.As traffic volume increases,the benefit firstly increases in uncongested conditions and then decreases in congested conditions.It reaches the maximum at car volumes nearly 1 100 vehicles per hour.The results can be used to aid in the selection of a preferred bus stop design for a given traffic volume in developing countries.To determine how bus stop design influences mixed traffic operation near Chinese bus stops, a new theoretical method was developed by using additive-conflict-flows procedure. The procedure was extended from homogeneous traffic flow to mixed traffic flow. Based on the procedure and queuing theory, car capacity and speed models were proposed for three types of bus stops including curbside, bus bay and bicycle detour. The effects of various combinations of bus stop type, traffic volume, bus dwell time, and berth number on traffic operations were investigated. The results indicate that traffic volume, bus dwell time and berth number have negative effects on traffic operations for any type of bus stops. For different types of bus stops, at car volumes above approximately 200 vehicles per hour, the bus bay and bicycle detour designs provide more benefits than the curbside design. As traffic volume increases, the benefit firstly increases in uncongested conditions and then decreases in congested conditions. It reaches the maximum at car volumes nearly 1 100 vehicles per hour. The results can be used to aid in the selection of a preferred bus stop design for a given traffic volume in developing countries.

关 键 词：mixed traffic flow bus stop road capacity SPEED bicycles 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]