Freight is commonly considered over-dimensional or oversized when the dimensions of it exceed the rules and regulations of any given province, territory or state. Dimensions such as height, width, length and weight are all contributing factors when determining if a load is over-dimensional or not.
In British Columbia for example here are some (but not all) of the more common vehicle and load dimension limits at which point, if exceeded, permits and other provisions are required to safely and legally carry out the transport process.
- Vehicle Height – A person must not, without a permit, drive or operate a vehicle having a height in excess of 4.15 m.
- Vehicle Width – A person must not, without a permit, drive or operate on a highway a vehicle having a total outside width in excess of 2.6 m
- Vehicle Overall Length (Tractor Semi-Trailer Combination i.e. trombone or expando trailer) – With single or tandem drive tractor Max 23.0 m or with tridem drive tractor Max 23.5 m.
- Vehicle Weight – Maximum Gross Combination Vehicle Weight (GCVW) of combination noted above is 57,100 kg.