DESIGN GUIDE FOR AUXILIARY PASSING LANES ON RURAL TWO-LANE HIGHWAYS
The objective of this research was to determine the conditions under which the construction of an auxiliary passing lane on two-lane rural highways is economically justified. A conflict-opportunity model was developed which estimates the number of potential passing conflicts with an opposing vehicle that a given traffic volume will generate. By assigning a cost-per-conflict opportunity and adjusting for the length of passing zones available, the passing-accident costs for a given roadway segment were estimated. Based on prior research, a deterministic reduction of this cost was used to estimate the savings that would result from an auxiliary passing lane. The TWOWAF model was then used to simulate delay and travel speeds for trucks and passenger vehicles for typical highway sections both without and with an auxiliary passing lane. Benefit-cost analysis was applied to determine the average daily traffic (ADT) levels at which an auxiliary passing lane would be economically justified as a function of section length, percent passing zones available, cost per conflict, construction cost, and discount rate.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309047609
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1195, Geometric Design and Operational Effects. 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
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Authors:
- Kaub, Alan R
- Berg, William D
- Publication Date: 1988
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 92-100
- Monograph Title: Geometric design and operational effects
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Serial:
- Transportation Research Record
- Issue Number: 1195
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Average daily traffic; Benefit cost analysis; Costs; Economics; Mathematical models; Passing lanes; Rural highways; Savings; Traffic conflicts; Traffic delays; Traffic speed; Traffic volume; Two lane highways
- Subject Areas: Design; Economics; Finance; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00489693
- Record Type: Publication
- ISBN: 0309047609
- Files: TRIS, TRB, ATRI
- Created Date: Nov 30 1989 12:00AM