|
|
|
Title: Model for Predicting Speed Along Horizontal Curves on Two-Lane Highways
Accession Number: 01126970
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: This paper describes the development and calibration of a curve speed prediction model. The model includes variables for curve radius, deflection angle, superelevation rate, and tangent speed. The model is based on the hypothesis that drivers modify their side friction demand because of a desire for both safe and efficient travel. One model component reflects a general desire by motorists to have lower side friction demand on higher speed curves. This trend likely reflects the driver’s desire to maintain an acceptable margin of safety against sliding out or rolling over. A second model component reflects a willingness by drivers to tolerate slightly higher side friction demand on sharper curves in an effort to minimize the amount of speed reduction. The increase in side friction demand that a driver accepts is found to be proportional to the energy required to slow the vehicle to the curve speed.
Monograph Title: Operational Effects of Geometrics and Access Management 2009 Monograph Accession #: 01137568
Report/Paper Numbers: 09-1419
Language: English
Authors: Bonneson, James APratt, Michael PaulPagination: pp 19-27
Publication Date: 2009
ISBN: 9780309126106
Media Type: Print
Features: Figures
(5)
; References
(11)
; Tables
(4)
TRT Terms: Uncontrolled Terms: Subject Areas: Design; Highways; Safety and Human Factors; I20: Design and Planning of Transport Infrastructure; I82: Accidents and Transport Infrastructure
Files: TRIS, TRB, ATRI
Created Date: Jan 30 2009 5:40PM
More Articles from this Serial Issue:
|
