00819925

Component

https://doi.org/10.3141/1748-10

http://scholar.google.com....+Wu&publication_year=2001

An online method for traffic-adaptive turning proportion estimation for intersections based on a least-squares minimization approach is presented. It assumes that entering-vehicle lane counts and exiting-vehicle counts during every traffic signal phase and in each direction of an intersection are available. Estimations based on field data in the last three cycles (approximately 5 min) are compared with actual values. This method of turning proportion estimation was also implemented within RHODES, a real-time traffic-adaptive signal control system developed in the Advanced Transportation and Logistics: Algorithm and Systems Research Center at the University of Arizona. The resulting system was evaluated in a laboratory using CORSIM, a microscopic traffic simulation computer package. Performance of RHODES improves when the online traffic-adaptive turning proportions are used instead of constant turning proportions.

This paper appears in Transportation Research Record No. 1748, Advanced Traffic Management Systems and Vehicle-Highway Automation 2001.

English

p. 80-86

2001

Transportation Research Record

0309072077

Figures (7) ; References (10) ; Tables (1)

Adaptive control; Alternatives analysis; Estimating; Least squares method; Minimization; Real time data processing; Signalized intersections; Traffic signal control systems; Turning traffic

CORSIM (Traffic simulation model); RHODES (Computer program)

Field data; Online method

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Nov 2 2001 12:00AM

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