|
|
|
Title: USE OF ADDITIONAL THROUGH LANES AT SIGNALIZED INTERSECTIONS
Accession Number: 00370578
Record Type: Component
Availability: Find a library where document is available Abstract: One method sometimes used to increase the capacity of signalized intersections is to widen the roadways through the intersections to provide additional through lanes. The degree to which these additional through lanes actually improve the efficiency of traffic operations at the intersections depends on the extent to which they are used by through vehicles. The objectives of this research were to (a) observe the use of additional through lanes, (b) evaluate the effect of the length of these lanes on their use by through vehicles, and (c) incorporate the findings into the critical-movement-analysis techniques in Transportation Research Board (TRB) Circular 212. Lane-use studies were conducted during peak periods on five signalized intersection approaches that had additional through lanes that ranged from 800 to 1200 ft in length. The lane-use data were collected for more than 700 signal cycles that were fully utilized by through vehicles. Analyses of these data determined that use of these lanes by through vehicles fit a Poisson distribution with a mean that was a linear function of lane length and green time. It was concluded that (a) the lane-use factors of the critical-movement-analysis procedure in TRB Circular 212 generally overestimate the use of additional through lanes by through vehicles and (b) length requirements for additional through lanes based on vehicle storage considerations are too short to achieve an average use of additional through lanes of more than 1.5 through vehicles per cycle. (Author)
Supplemental Notes: Publication of this paper sponsored by Committee on Highway Capacity and Quality of Service.
Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01411669
Authors: McCoy, Patrick TTobin, John RPagination: pp 1-5
Publication Date: 1982
Serial: ISBN: 030903373X
Media Type: Print
Features: Figures
(5)
; References
(8)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory
Files: TRIS, TRB
Created Date: Mar 31 1983 12:00AM
More Articles from this Serial Issue:
|
