If the trailer was built before 1989 it should have a chassis number as its identification number.
- Chassis numbers can contain any combination of alphanumeric characters. There is no length requirement for a chassis number.
If the trailer was built after 1989: it will have a 17 digit Vehicle Identification Number (VIN).
- A VIN is made up of 17 alphanumeric characters. These characters are decodable and provide information on the trailer including when it was built, the manufacturer of the trailer, and the type of trailer.
Both chassis numbers and VINs must be permanently affixed to a substantial part of the trailer (generally on the drawbar).
For an identification number to be considered permanently affixed, the VIN or Chassis number must be either:
- Welded
- Stamped
- Etched
- Embossed
New trailers also require a trailer plate (also known as a compliance plate). The trailer plate contains important information about the trailer including the ATM
It is a legal requirement to have an identification number permanently affixed to a trailer.
Note: Identification numbers are not transferable between other trailers or motor vehicles. It is an offence to dishonestly obtain or attempt to obtain registration or alter or deface an identification number.