Application of Trackaxle to multi-combination vehicles

When compared with conventional, 6-axle articulated vehicles, the equivalent Trackaxle equipped vehicles consistently demonstrated better offtracking in low-speed turns, lower tyre-force related pavement and vehicle impacts (scrubbing and vertical loads), reduced power requirement for turning, and acceptable in-traffic behaviour. The further benefits of Trackaxle in multi-combination vehicle installations has not yet been fully explored or formally quantified and documented. This paper considers a wide range of performance aspects of a number of innovative single-, double-, triple- and quad-trailer heavy-vehicle combinations that feature the Trackaxle steerable axle system. Using a performance-based standards (PBS) approach, and drawing on the formal standards that are now in place in Australia developed jointly by the National Transport Commission (NTC) and Austroads, the performance of select multi-combination vehicles that feature single and multiple Trackaxle installations is compared and contrasted with equivalent conventional vehicles. When compared with equivalent baseline vehicles, the Trackaxle multi-combination vehicles considered in this paper were found to have substantially better safety performance, increased productivity and would be less damaging to the infrastructure. The main challenge for fleet operators and road agencies is to address overtaking provision issues associated with operating longer vehicles on two-lane two-way roads constrained by road sight distance, traffic volume and overtaking opportunities.


  • English

Media Info

  • Pagination: 10p
  • Monograph Title: 9th International Symposium on Heavy Vehicle Weights and Dimensions, June 18-22, 2006, Pennsylvania State University, State College, Pennsylvania

Subject/Index Terms

Filing Info

  • Accession Number: 01388844
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 23 2012 1:20AM