Measuring and modeling the dynamic of heavy commercial vehicles and their interactions with other vehicles

This work investigates the effect of heavy commercial vehicles on the capacity and overall performance of congested freeway sections and sought to develop a mathematical model for the car-following behavior of heavy commercial vehicles under congested traffic conditions. There have been very few studies concerned with the traffic behavior and characteristics of heavy vehicles in these situations. This study draws on extensive data collected over a long stretch of freeway using videotaping and surveys at several sites. The collected data were firstly used to study the interaction between heavy vehicles and cars as well as to study the following behavior of different type of vehicles. Through a detailed trajectory analysis the following behavior of 120 heavy vehicles were then analyzed to provide a thorough understanding of heavy vehicles following behavior mechanism. A theoretical framework for modeling the acceleration-deceleration behavior of heavy vehicles is presented. The framework uses a stimuli-response psychophysical concept as in its basic formulation. The collected data are used to calibrate the proposed model. The results showed a significant difference in the following behavior of heavy vehicles compared to other vehicles.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Sarvi, M
• Conference:
  • Transportation Research Board 87th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2008-1-13 to 2008-1-17
• Date: 2008-1

Language

• English

Media Info

• Pagination: 14p
• Monograph Title: Transportation Research Board 87th Annual Meeting compendium of papers DVD, January 13-17, 2008, Washington, DC

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Car following; Deceleration; Freeways; Heavy vehicles; Highway traffic control; Mathematical models; Traffic congestion
• ATRI Terms: Acceleration; Car following; Deceleration; Freeway; Heavy vehicle; Modelling; Traffic congestion; Traffic management
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 01385027
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Aug 22 2012 6:29PM