Roll cage

Racing cages are typically either bolt-in or welded-in, with the former being more straightforward and cheaper to fit while the latter is stronger and more substantial.

Due to the lack of a protective top, some modern convertibles utilize a strong windscreen frame acting as a roll bar.

A newer form of rollover protection, pioneered on the Mercedes-Benz R129 in 1989, is deployable roll hoops that are usually hidden within the body of a car.

When sensors detect an imminent rollover, the roll hoops quickly extend and lock in place.

Cars that have a deployable rollover protection system include the Peugeot 307 CC,[4] Volvo C70, Mercedes-Benz SL 500, Jaguar XK,[5] and the Lamborghini Reventón Roadster.