You must have a valid driver's licence (Class G1, G2 or G) or higher class of licence to tow a trailer with a gross vehicle weight of up to 4,600 kilograms. If your trailer and load exceeds the size and weight specified in the Highway Traffic Act, you may need a higher class of licence or an oversize vehicle permit to tow it. Oversize permits are available at some MTO Driver and Vehicle Licence Issuing Offices.

It is against the law to tow more than one trailer behind non-commercial vehicles.