Hazard immobilisation

A robot that has been immobilised through the actions of an arena hazard has experienced a hazard immobilisation. This differs from hostile immobilisations (which are inflicted by enemy robots), malfunctions (in robot design or engineering) and self-inflicted immobilisations (that occurred due to the robot's own actions).

Definition
A hazard immobilisation usually occurs due to a robot being forced into contact with an arena obstacle such as the pit. Being pushed into the pit or over a grille counts as a hazard immobilisation, whereas a robot making an avoidable error and driving into the pit or over a grille is regarded as a self-inflicted immobilisation. A robot being being held by an opponent over the flame pit resulting in components such as motors and batteries burning out is a hazard immobilisation, while a robot lingering over the flame pit on its own and ceasing to function is self-inflicted. Being flipped over or breaking down due to being hit by an arena spike is a hazard immobilisation and not self-inflicted, as the spikes are activated by an arena operator, and difficult to anticipate driving over due to their small size compared to other hazards.