Adoption of more general use of quad axle groups in semi-trailers and B-doubles

This paper sets out the National Transport Commission's proposal for implementation of a directive by the Council of Australian Governments to permit more general use of quad axle groups in semitrailers and B-doubles. The proposal uses the findings of recent research by Queensland Main Roads and Queensland Transport, which compared the pavement effect of various triaxle and quad axle loadings against that of a reference standard 8.2 tonne single axle and determined an equivalency for the standard axle group load and two proposed operational mass limits for quad axle groups. This policy proposes these mass limits together with a number of operating conditions. Jurisdictions will be able to implement the proposal using existing provisions to provide road access for quad axle groups, taking account of pavement and bridge protection and community considerations. It is intended that model legislation to replace this approach will be prepared by the end of 2008.

  • Record URL:
  • Corporate Authors:

    National Transport Commission (NTC)

    Melbourne, Victoria   

    National Transport Commission (NTC)

  • Publication Date: 2006-11


  • English

Media Info

  • Pagination: 9p

Subject/Index Terms

Filing Info

  • Accession Number: 01386353
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 22 2012 9:11PM