Topic summary
Demolition derby

Demolition derby is a type of motorsport usually presented at county fairs and national events. While rules vary from event to event, the typical demolition derby consists of five or more drivers competing by deliberately ramming their vehicles into one another. The last driver whose vehicle is still operational is awarded the victory. Demolition derbies originated in the United States and quickly spread to other Western nations. For example, Australia's first demolition derby took place in January 1963. In the UK and parts of Europe, demolition derbies (sometimes called "destruction derbies") are often held at the end of a full day of banger racing.
In demolition derbies, serious injuries such as whiplash are rare, but they do happen. Drivers are typically required to sign a waiver to release the promoter of an event from liability. At almost all derbies, attempts are made to make the event safer; all glass is removed from the vehicles, and deliberately ramming a driver's-side door area is forbidden. The driver's door is often required to be painted white with black numbers or blaze orange, or with contrasting colors.