Lateral Distribution of Mixed Traffic on Two-Lane Roads
Authors: Partha Pratim Dey [email protected], Satish Chandra [email protected], and S. Gangopadhaya [email protected]Author Affiliations
Publication: Journal of Transportation Engineering
Volume 132, Issue 7
Abstract
Location of the outer wheel path is an important input in the measurement of deflection response of a pavement and its riding quality. In the simulation of mixed traffic flow, it is also required to assign the position of a vehicle within a lane when it enters the test section. The statistical distributions fitted through the placement data recorded on 19 different sections of two-lane highways in India indicate that the placement of vehicles may follow a unimodal or a bimodal curve depending upon the percentage of slow and fast moving vehicles. Two parameters are introduced in this technical note. These are placement factor (PF) and skewness range (SR). It is observed that the placement data follow a unimodal curve if PF and SR are less than 1.3 and 0.54, respectively. Otherwise it is a case of bimodality.
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Reference
Swamee, P. K., and Swamee, N. (2004). “Equations for grain size distribution curve.” Int. J. Sediment Research, 19, 66–74.
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© 2006 ASCE.
History
Received: Aug 16, 2005
Accepted: Dec 22, 2005
Published online: Jul 1, 2006
Published in print: Jul 2006
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Research Scholar, Dept. of Civil Engineering, Indian Institute of Technology, Roorkee 247 667, India. E-mail: [email protected]
Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology, Roorkee 247 667, India (corresponding author). E-mail: [email protected]
Head, Transport Planning and Environment Division, Central Road Research Institute, New Delhi 110020, India. E-mail: [email protected]
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