PASSENGER CAR UNITS FOR DIFFERENT MIDBLOCK SECTIONS IN SRI LANKA UNDER MIXED TRAFFIC CONDITION

Dineth Dhananjaya; Madushan  Fernando; Mavin  Silva; Thillaiampalam Sivakumar

doi:10.5937/jaes0-36600

Dineth Dhananjaya Department of Transport and Logistics Management, Faculty of Engineering, University of Moratuwa, Sri Lanka https://orcid.org/0000-0003-2829-1105
Madushan Fernando Department of Transport and Logistics Management, Faculty of Engineering, University of Moratuwa, Sri Lanka; Center for Supply Chain Operations and Logistics Optimization, University of Moratuwa, Sri Lanka https://orcid.org/0000-0003-4505-980X
M. Mavin De Silva Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Japan https://orcid.org/0000-0002-8816-0011
T. Sivakumar Department of Transport and Logistics Management, Faculty of Engineering, University of Moratuwa, Sri Lanka https://orcid.org/0000-0002-2895-9577

DOI: https://doi.org/10.5937/jaes0-36600

Keywords: Passenger Car Unit (PCU), heterogeneous traffic, mixed traffic, midblock road sections, chandra's method

Abstract

Traffic-related analyses are essential to implementing traffic management approaches to create mobility more convenient. In this context, Passenger Car Unit (PCU) values as a uniform measure of vehicles are instrumental in analysis such as traffic capacity estimation, traffic flow model development, level of service determination, etc. These studies always demand a recently calculated set of PCU values since the traffic conditions in arterials often change. PCU values for expressway and three-lane (one-way) road types have not been calculated in the Sri Lankan context, and the available set of values has become somewhat outdated. Hence, this study used Chandra's method to assess the PCU values of ten vehicle categories for four different mid-block road sections in the Colombo district, Sri Lanka. The data relating to the two main variables of this method, categorical speed, and area of vehicles, were collected from field surveys. The results of four-lane arterials were aggregated and compared with the existing PCU values, intending to propose an updated set for general transportation studies in Sri Lanka.

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