How fast does a car that hits you have to be going for airbags to deploy?

Airbags typically deploy in moderate to severe collisions, usually at speeds of around 8 to 14 mph (13 to 23 km/h) or higher. The exact threshold can vary based on the vehicle's design, the severity of the crash, and the type of impact (frontal, side, etc.). Airbags are designed to activate based on the force of impact rather than speed alone, so factors like the angle of impact and the weight of the vehicles involved also play a significant role.