Capacity and Dynamic Passenger Car Unit Estimation for Heterogeneous Traffic Stream of Urban Arterials: A Case Study of Indian Metropolis
Rapid urbanization increases the number of vehicles on a road section significantly throughout the country. Indian traffic is purely heterogeneous consisting of variety of vehicles which comprise of wide range of static and dynamic characteristics. To estimate volume of such heterogeneous traffic it is essential to convert the different types of vehicles into equivalent passenger cars and express the volume in terms of Passenger Car Unit (PCU) per hour. The equivalency unit is universally adopted for measurement of traffic volume and the value is obtained by taking the passenger car as the ‘Standard Vehicle’. The present study has been concentrated on four and six lane divided urban arterials in Kolkata. The PCU of vehicles have been presented for both categories of urban roads and the values are found to be higher than the values given in IRC: 106-1990. It has also been observed that, PCU values of different types of vehicles have been found to be different for different ranges of traffic volume due to its dynamic characteristics. Capacity of four lane and six lane divided urban arterials have been found to be 4465 PCU/hr and 6264 PCU/hr using the dynamic PCU values fitted by Greenshield’s model. A mathematical model has been developed on the basis of the variation of PCU with traffic volume. The model is developed to forecast the PCU for several vehicular categories that has been statistically validated at different ranges of traffic volume.
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Supplemental Notes:
- This paper was sponsored by TRB committee AHB40 Standing Committee on Highway Capacity and Quality of Service.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Mondal, Satyajit
- Chakraborty, Sandip
- Roy, Sudip Kumar
- Gupta, Ankit
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 15p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Arterial highways; Highway capacity; Mathematical models; Passenger car equivalence; Traffic lanes; Traffic volume; Urban highways; Vehicle size
- Geographic Terms: Kolkata (India)
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 01622735
- Record Type: Publication
- Report/Paper Numbers: 17-00273
- Files: PRP, TRIS, TRB, ATRI
- Created Date: Jan 19 2017 9:12AM