In British usage, a dumper is a small one-man diesel-powered vehicle often used to carry loads and material around, often on building sites. It has a towing eye on its back end, to tow such things as a air compressor to run pneumatic drills. Its skip can tip to empty its load out.
The older Lister-type dumpers steer by turning its back wheels. Its motor is started by hand cranking. It has no electronics and thus has not much that can easily go wrong. Its skip is secured by a catch underneath and raised and lowered by a man pulling at its front upper edge.
Modern dumpers often steer by articulating at the middle of the chassis. They have electronics and hydraulics and are more expensive to make and operate. Some of them have an A-frame over the seat as a precaution against roll-overs. The skip has power tipping and often lifts as it tips.
These vehicles are also called "dumper" in some mainland European languages.
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