A Study on LRT and At-grade Signalized Intersection Capacity
Date Issued
2006
Date
2006
Author(s)
Chiu, Jung-Wu
DOI
zh-TW
Abstract
Because there is no LRT system in Taiwan, this study made field surveys in Hong Kong and European cities to build the LRT operating model and the passenger flow time regressions for different demand situations. Besides this study also investigated traffic flow and driving behavior in signalized intersection to input localized parameters. This research integrated capacity concepts segregation railway system and type B right-of-way transit including safety separation time, dwell time, operating margin and g/C ratio factor. Proving by actual operating data of the LRT of Hong Kong, the LRT railway capacity this research built actually applies to Asian cities. Moreover this research founded the train capacity estimating process by spatial design and numbers of seats and standees. This research divided at-grade crossing influenced by the LRT operation into three stages. The first one is to suppose that facilities for the LRT would decrease road space for vehicles to use and adopt VISSIM to simulate differences. The second stage is to change the traffic control strategies like speed limit or signal design through the length of green phase. The last one is to continue the outcomes of HCM to measure how operation of LRT would interrupt the traffic flow and consider two modes: motorcycle with vehicle. Differences of capacity of motorcycle influenced by LRT are larger than vehicle and ones of left-turn is larger than right-turn especially intensive headway. Left-turn LRT would interrupt more traffic flow. Curves of factor of headway shape inversive type. The shape of length and speed of LRT and yield distance are all linear. Offset of headway of two-way shapes high-order nonlinear.
Subjects
輕軌運輸系統
軌道容量
號誌化路口容量
Light Rail Transit
Railway Capacity
Signalized Intersection
Type
thesis
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