Airbag Deployment Speed and Sternum Injury Risk

No, airbags do not deploy at 300 km/h. Typical deployment speed is 160–320 km/h (100–200 mph). While this force can cause injuries (abrasions, fractures, burns), sternal fracture from airbag alone is uncommon. Modern airbags are designed to deploy with controlled force and venting to minimize injury risk.

Sternal fractures in crashes usually result from steering wheel impact or seatbelt loading—not airbag deployment. Proper seating position (25+ cm from wheel) and seatbelt use optimize airbag protection.