MINIMUM HORIZONTAL CURVE RADIUS AS FUNCTION OF GRADE INCURRED BY VEHICLE MOTION IN DRIVING MODE
An enriched "bicycle" model was developed to describe the driving mode during the motion of a passenger car. The bicycle model is contrary to the mass-point model, which is suitable for the examination of the braking mode of a passenger car. The analysis concludes that there is a strong relationship between the radius of the horizontal curve and grade, which is found by studying vehicle motion on a helical surface. In some cases values of the minimum radius of the horizontal curve derived from the relationship exceed those suggested by AASHTO (1990) or RAS (1984). This means that, in such cases, existing guidelines lead to underdesigned values, because they do not consider that the driving mode during vehicle motion is critical.
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1445, Cross Section and Alinement 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:
- Kontaratos, Marios
- Psarianos, Basil
- Yotis, Apostolos
- Publication Date: 1994
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 86-93
- Monograph Title: Cross section and alinement design issues
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Serial:
- Transportation Research Record
- Issue Number: 1445
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Curvature; Curves (Geometry); Radius; Slopes
- Uncontrolled Terms: Grade (Slope); Horizontal curvature
- Old TRIS Terms: Driving mode (As opposed to braking mode); Radius of curvature; Vehicle motion
- Subject Areas: Design; Highways; I20: Design and Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00675333
- Record Type: Publication
- ISBN: 0309060516
- Files: TRIS, TRB, ATRI
- Created Date: Mar 20 1995 12:00AM