Lane Volume and Saturation Flow Rate for Multilane Intersection Approach
Publication: Journal of Transportation Engineering
Volume 124, Issue 3
Abstract
One factor that can reduce a lane's saturation flow to less than ideal conditions is when turning vehicles share the lane with through vehicles. The slow discharge rate of the turning vehicles reduces the lane's effective saturation flow rate in direct proportion to the percentage of turn vehicles in it. A model is described that predicts this percentage and the resulting saturation flow rate of the shared lane. Based on the results of this research, it is believed that the proposed model accurately predicts the lane volume for any approach to a signalized intersection and the uncontrolled approach to an unsignalized intersection. The model extends previous models by incorporating a sensitivity to both left- and right-turn movements and the probability of a lane change into a closed-form solution. Some field data are used to validate the proposed model.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bonneson, J. A., and McCoy, P. T. (1997). “Capacity and operational effects of midblock left-turn lanes.”NCHRP Rep. No. 395, Transp. Res. Board, Washington, D.C.
2.
Highway capacity manual. (1994). Spec. Rep. 209, 3rd Ed., Transp. Res. Board, Washington, D.C.
3.
Lieberman, E. B. (1980). “Determining the lateral deployment of traffic on an approach to an intersection.”Transp. Res. Rec. 772, Transp. Res. Board, Washington, D.C., 1–5.
Information & Authors
Information
Published In
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: May 1, 1998
Published in print: May 1998
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.