Semi-trailer truck facts for kids

Kids Encyclopedia Facts
Backing it in 2
Semi-trailer truck with 'sleeper' behind the cab.

A semi-trailer truck, also known as a semi, tractor-trailer, big rig, eighteen-wheeler, or (in the United Kingdom and Ireland) articulated truck or articulated lorry, is a vehicle that has a towing engine and a semi-trailer that carries the freight. They use diesel fuel.

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Semi-trailer truck Facts for Kids. Kiddle Encyclopedia.