INTERSECTION SIGHT DISTANCE REQUIREMENTS FOR LARGE TRUCKS
An analysis has been conducted to determine the sight distance requirements of large trucks at intersections. AASHTO policy is briefly reviewed and related vehicle characteristics are identified. Truck characteristics are updated based on permitted 1982 Surface Transportation Assistance Act design vehicles and published truck acceleration models. The results of sensitivity analyses are compared with current policy and are summarized for each of the intersection sight distance cases considered by AASHTO. The findings imply that current intersection sight distance criteria may not be adequate for trucks when the current AASHTO models are exercised for the representative truck characteristics. Nevertheless, the findings, particularly for Case III intersection sight distance, result in impractically long sight distance requirements. Therefore, the development of alternative approaches for establishing realistic sight distance values is advocated. In particular, a truck driver gap-acceptance concept is proposed for further study. The gap lengths that truck drivers safely accept would be determined through field studies, and sight distance criteria would then be established to ensure that truck drivers on a side road approach would have sight distance at least equal to acceptable gap length.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309048079
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1208, Highway Sight Distance Design Issues. 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:
- Mason Jr, John M
- Fitzpatrick, Kay
- Harwood, Douglas W
- Publication Date: 1989
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 47-58
- Monograph Title: Highway sight distance design issues
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Serial:
- Transportation Research Record
- Issue Number: 1208
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Gap acceptance; Highway safety; Intersections; Sensitivity analysis; Sight distance; Stopping sight distance; Truck drivers; Trucks; Vehicle characteristics
- Identifier Terms: American Association of State Highway and Transportation Officials
- Subject Areas: Design; Highways; Motor Carriers; Planning and Forecasting; I21: Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00490646
- Record Type: Publication
- ISBN: 0309048079
- Files: TRIS, TRB, ATRI
- Created Date: Jan 31 1990 12:00AM