What Does the Number of Axles on a Vehicle Mean?

[Russell]

The function of the number of axles on a vehicle is to bear the load of the vehicle and maintain its normal operation on the road. Vehicles are categorized by the number of axles: single axle, double axle, front four rear four, front four rear eight, semi-trailer for more axles, two-axle tractor with three-axle trailer, three-axle tractor with three-axle trailer. Below are the applications of vehicle axle counts: 1. Ordinary family cars generally use a single axle. 2. For highway transport vehicles with a total mass less than 19 tons and vehicles not subject to road or bridge axle load limits, such as mining dump trucks, a simple and cost-effective two-axle configuration is typically used. 3. Highway transport vehicles with a total mass between 19-26 tons adopt a three-axle configuration, while vehicles with even greater total mass should use four or more axles. 4. Generally, three-wheeled trucks have a capacity of 2 tons; low-speed trucks (four wheels with a maximum design speed less than 70 km/h) 4.5 tons; two-axle trucks 17 tons; three-axle trucks 25 tons (27 tons for vehicle combinations consisting of a two-axle vehicle and a one-axle trailer); four-axle trucks 35 tons; five-axle trucks 43 tons; six-axle and above trucks 49 tons.