The National Heavy Vehicle Regulator (NHVR) administers one set of laws (the HVNL) and 5 sets of Regulations for heavy vehicles over 4.5 tonnes gross vehicle mass. The HVNL commenced on 10 February 2014 in the ACT, NSW, SA, TAS, VIC & QLD.
HVNL has not commenced in WA or the NT at this time. The HVNL still applies to vehicles from WA & NT when they cross into a state where the HVNL applies. Drivers will need to comply with certain aspects of the HVNL before they cross the border (e.g. work diary requirements).