In 2017, 185 people died as a result of crashes involving heavy vehicles. Heavy vehicles make up less than 3% of all vehicles on the road but account for 14.7% of crashes that happen on Australian roads. Heavy vehicles have different limitations to other lighter vehicles which means they need extra consideration from other road users when they are travelling around them. Vehicles are considered heavy when they weigh over 4.5 tonnes and include buses, trucks, trailers, freight vehicles, special purpose vehicles like fire trucks and agricultural trailers and vehicles.
Drivers of heavy vehicles over 7.5 meters long need to leave a gap of at least 60 meters from themselves and the car in front of them because they need greater stopping distances.