Even the tractor unit has been painted to match the container.

The tractor unit has an engine and the semi-trailer does not.

Basically they're just large caravans we link up to a tractor unit.

In other countries, the tractor unit of each truck is not carried on the train, only the trailer.

These are for tractor units, not straight, rigid, box or other heavy vehicles.

If the trailer or tractor unit moves, it can easily crush someone.

Several trailers might be towed by one or more tractor units.

A tractor unit can sometimes have a mounted crane located behind the cab.

Originally the series was reserved for Research and Tractor units.

One is designated for the tractor unit, and another for the following trailer.

They are only mobile when connected to the correct tractor unit, which can limit their use in recovery.

These vehicles were available in rigid and tractor units, with either petrol or diesel engines.

The tractor unit can be powered by a combustion engine or an electric motor.

The large trailers pulled by a tractor unit come in many styles, lengths, and shapes.

A fee is not charged separately for trailers but in conjunction with the tractor unit.

More than 75% of heavy chassis sold in Britain in the following years were tractor units.

Tractor unit of an articulated lorry, known in Britain as an "artic cab"

The tractor unit serves as a method of moving trailers (most often semi-trailers).

These consist of a tractor unit with a turn-table device which can be linked to a trailer.

It was a heavy tractor unit, cased in bulletproof steel sheets.

The firm also built tractor units to replace horses for use with horse-drawn carriages.

Operating a tractor unit with no trailer attached.

A tractor unit can have many axles depending on axle load legislation.

These carried the entire weight of the tank on their own wheels, putting no weight onto the tractor unit.

Get that damned tractor unit over here!