Freeway operation characteristics of heavy commercial vehicles traffic

This work investigates the effect of heavy commercial vehicles on the capacity and overall performance of congested freeway sections. Furthermore, the following behaviors of heavy commercial vehicles and its comparison with passenger cars are presented. Freeways are designed to facilitate the flow of traffic including passenger cars and trucks. The impact of these different vehicle types is not uniform, creating problems in freeway operations and safety particularly under heavy demand with a high proportion of heavy vehicles. 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. 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. The results showed a significant difference in the following behavior of heavy vehicles compared to other vehicles.

Language

  • English

Media Info

  • Pagination: 12p
  • Monograph Title: Transportation Research Board 88th Annual Meeting compendium of papers DVD, January 11-15, 2009, Washington, DC

Subject/Index Terms

Filing Info

  • Accession Number: 01383968
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 22 2012 4:05PM