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Predicting Speed Model of Horizontal Curves on Exclusive Motorcycle Lane.


Hamid, Hussain and Faezi, Seyed Farzin and Davoodi, Seyed Rasool (2011) Predicting Speed Model of Horizontal Curves on Exclusive Motorcycle Lane. Australian Journal of Basic and Applied Sciences, 5 (5). pp. 590-598. ISSN 1991-8178


The prediction and estimation of operating speeds on highways are of great significance to planners and designers. A variety of physical factors may influence speeds on highways. Horizontal curvature has the greatest impact on speed. The objective of this study was to develop speed prediction equation on horizontal curve using the geometric characteristics of the curve at 11 sites in exclusive motorcycle lane. To achieve this objective, the speed of motorcyclist was measured in exclusive motorcycle lanes in Malaysia. The multiple linear regression analysis was conducted to evaluate the effect of horizontal curve variables on the speed reduction, expressed as 85th percentile speed reduction, as a dependent variable. The main independent variables entry in the regression analyses were radius of the curve (R), length of tangent (T) and deflection angle (Δ). Also the effect of curve radius on the predicted 85th percentile curve speed was investigated. The findings from the efforts were guidelines in design for different curve types. These guidelines will help both designer and decision makers in evaluating different alignment alternatives.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Keywords: Exclusive motorcycle lane; Speed prediction; Linear regression model; Horizontal curve; Operating speed.
Depositing User: Muizzudin Kaspol
Date Deposited: 07 Oct 2014 03:38
Last Modified: 14 Sep 2015 03:46
URI: http://psasir.upm.edu.my/id/eprint/23289
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