Note: Queensland legislation no longer requires that guidelines be carried in the vehicle.
The Guideline for Multi-combination Vehicles in Queensland, Form 1, Version 10 explains the conditions under which road trains (including B-triples, AB-triples, BAB-quads, ABB-quads and prime mover/semitrailer combinations towing one converter dolly) or B-doubles may be used on roads in Queensland.
are provided in portable document format (PDF). These maps indicate the roads approved for the relevant multi-combination vehicle. The legend
explains how the routes are identified and should be used in conjunction with the maps.
Applying for B-double routes
To apply for B-doubles routes not listed in the maps, complete the B-double Additional Route Applicaton form (F3115) and forward to:
Heavy Vehicle Access
Department of Transport and Main Roads
PO Box 70, Spring Hill, Queensland 4000.
Hard copies of the guidelines
A hard copy of the guideline (including maps) can be purchased from the Queensland Government bookshop.