If the vehicle is involved in a collision, it should be checked by a retailer/authorised repairer or suitably qualified personnel, before starting or driving.
Some vehicles have an SOS emergency call button and an optimised assistance call button. See INCONTROL REMOTE SMARTPHONE APP.
Some vehicles have a Post Crash Braking function that will in certain circumstances apply the vehicle brakes following a collision. The brakes are released when the ignition is cycled.