Effect of Platoons on Permissive Left‐Turn Capacity: Pilot Study
Publication: Journal of Transportation Engineering
Volume 115, Issue 2
Abstract
Existing models for estimating left turn capacity assume an average opposing flow rate throughout the cycle. While this assumption may be valid under random arrivals, it is evident that the presence of platoons results in different arrival patterns on the opposing approach during the green and red phases respectively. Pilot data collected at one intersection in the City of Chicago showed that the observed left‐turn capacity is inversely proportional to the platoon ratio and flow rate on the opposing approach. This indicates that progression for through traffic may have an adverse effect on the opposing left‐turns.
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References
1.
Fambro, D., Messer, C., and Anderson, D. (1977). “Estimation of unprotected leftturn capacity at signalized intersections.” Transp. Res. Record 644, Transp. Res. Board, Washington, D.C., 113–119.
2.
Highway capacity manual. (1985). TRM Special Report, Transp. Res. Board, Washington, D.C.
3.
Michalopoulos, P. G., O'Connor, J., and Novoa, S. M. (1978). “Estimation of left‐turn saturation flows.” Transp. Res. Rec. 667, Transportation Research Board, Washington, D.C.
4.
Nemeth, Z., and MeKemson, J. (1984). “Guidelines for left‐turn treatments at signal controlled intersections.” Final Report EES 611, The Ohio State University.
5.
SAS user's guide. (1985). SAS Institute Inc.
6.
Tanner, J. C. (1962). “A theoretical analysis of delay at an uncontrolled intersection.” Biometrika, 49(1), (2), 163–170.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 115 • Issue 2 • March 1989
Pages: 208 - 215
Copyright
Copyright © 1989 ASCE.
History
Published online: Mar 1, 1989
Published in print: Mar 1989
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