Heavy vehicle trailers
Configuration of a heavy trailer is based on one of five heavy trailer types and their axle grouping(s) (single, tandem, tri-axle and quad-axle).
Trailer configurations for heavy trailers will begin as follows:
- Pig trailers - TP
- Dog trailers - TD
- Semi trailers - TS
- Lead trailers - TL
- Dolly trailers - TY
and will end with a number, or series of numbers representing the axle grouping(s) of your trailer.
To provide additional details about your trailer, you may need to complete and submit the Vehicle Supplementary Details form .
If the trailer was previously registered in another state, is more than seven years old, and has an unladen mass of 4.5 tonnes or more, it will require a roadworthy inspection prior to registration.