A B-double is a combination of a prime mover towing two semi-trailers all connected by B-couplings.
A route that is approved for a B–double can be used by a B–double with the same or shorter overall length (e.g. a 19 metre B–double can operate on 23 metre and 25 metre approved routes; a 23 metre B–double can operate on a 25 metre approved route).
Access maps are available for:
- National Class 2 Heavy Vehicle B-double Authorisation (Notice) 2014 (No. 2) (Please note that Schedule 1 of this Notice has been replaced with Schedule 6 of the New South Wales Restricted Access Vehicle Enforceable Networks Schedule Amendment (Notice) 2015 (No.1)
- New South Wales Class 2 Heavy Vehicle Authorisation and Class 3 Heavy Vehicle Exemption (Notice) – Hunter Expressway and Other Roads - 2014 (No. 1)