What is the purpose of the hole under the car steering wheel?

[DelAdriel]

The hole under the car steering wheel serves as an exit point for the airbag to deploy in the event of a collision, functioning as a crucial safety device to protect the driver. The airbag system is a passive safety protection system that, when used in conjunction with seat belts, provides effective crash protection for the driver. In the event of a collision, car airbags can reduce head injury rates by 25% and facial injury rates by 80%. An airbag is a type of vehicle occupant restraint system, designed to inflate rapidly during a collision and then quickly deflate, aiming to provide a soft cushion and restraint for the occupants during a crash. The steering wheel is primarily composed of a frame, foam, and mounting clips or screw holes corresponding to the driver airbag (DAB).