00625327

Component

http://onlinepubs.trb.org...trr/1992/1356/1356-008.pdf

https://scholar.google.co...Liaw&publication_year=1992

Dimensions of most speed-control humps are determined from the engineering judgment of design engineers or past experience of the highway agency concerned. Guidelines for analytical design of hump geometry for speed control are not commonly available. A rational approach is presented in which the geometric dimensions of a hump selected are dependent on the choice of a design 85th-percentile hump-crossing speed and a peak vertical acceleration that governs drivers' choice of hump-crossing speeds. A mathematical half-car model is used to examine the suitability of trial hump designs with respect to the design hump-crossing speed and peak vertical acceleration. To facilitate design analysis, it is proposed that a representative car be selected from the traffic stream as the calibration reference for the half-car model. An example application is presented in which the hump-crossing speeds predicted using the proposed design procedure are found to be in good agreement with hump-crossing traffic speeds measured in Singapore and the United Kingdom.

This paper appears in Transportation Research Record No. 1356, Operational Effects of Geometrics and Geometric Design. 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

01404971

English

p. 66-72

1992

Transportation Research Record

0309052203

Figures (7) ; References (15) ; Tables (2)

Alternatives analysis; Design speed; Geometric design; Mathematical models; Speed control humps; Speed measurement; Traffic speed

Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure

TRIS, TRB, ATRI

Nov 16 1993 12:00AM

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