Optimal Control of Coordinated Signal Systems under the Over-Saturated Conditions through Traffic Simulation
Memoirs of the Faculty of Engineering, Yamaguchi University Volume 51 Issue 2
Page 123-128
published_at 2001-03
Title
シミュレーションによる混雑時の系統交通信号の最適制御の検討
Optimal Control of Coordinated Signal Systems under the Over-Saturated Conditions through Traffic Simulation
Source Identifiers
Creator Keywords
congestion
total delay
simulation
preferential offset
In this patper, some relationships between offsets and total delay were obtained from simple traffic simulation on small-scale signalized streets under the over-saturated conditions, from which some considerations were given about optimal offsets. Green times of each signal and common cycle length are given and only relative offsets are variables. Total delay is made up of delay at each link on main street. Findings are as follows : If only one direction is congested, preferential offset for uncongested direction is optimal. If both directions are congested, it is optimal to give preferential offset to each link of either direction. If traffic demands from cross streets through turning movements enter the main street and make it congested, it is difficult to optimize the offset from a viewpoin of total delay on main street. In addition, it was shown that such offsets that can maintain saturation flow during the green time at downstream signal are essential if the link is short and the storage capacity is lower than throughput capacity at the signal.
Languages
jpn
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
2001-03
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]1345-5583
[NCID]AA11422756
[isVersionOf]
[URI]http://memoirs.lib-e.yamaguchi-u.ac.jp/
Schools
工学部