Open AccessVehicle Delay Estimation for an Isolated Intersection under Actuated Signal Control
Author(s) -
Shumin Feng,
Yusheng Ci,
Lina Wu,
Fenglin Zhang
Publication year - 2014
Publication title -
mathematical problems in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 62
eISSN - 1026-7077
pISSN - 1024-123X
DOI - 10.1155/2014/356707
Subject(s) - intersection (aeronautics) , signal (programming language) , discretization , computer science , computation , control theory (sociology) , process (computing) , control (management) , poisson distribution , simulation , algorithm , engineering , mathematics , transport engineering , statistics , artificial intelligence , mathematical analysis , programming language , operating system
Vehicle delay at an actuated signal control (ASC) intersection is analyzed and computed with the aim of reflecting the effects of ASC and optimizing its parameters. The operation characteristics of traffic flows at the intersections serve as the foundation to present the mechanism of vehicle delay under the ASC; given that the arrival of vehicles obeys the Poisson distribution, probability algorithms of vehicle delay are put forward under the semi-ASC and fully ASC depending on discretization of green time. Computation process is illustrated by case study and CORSIM simulation experiments. Finally, the primary results indicate that the appropriate control modes can decrease vehicle delay, which is significantly affected by unit extension. Hopefully, the study will provide useful information for selecting different ASC modes and optimizing signal control parameters
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