In a vehicle equipped with an airbag, how much space should there be between your chest and the center of the steering wheel?

In a vehicle equipped with an airbag, there should there be 12-15 inches free space between your chest and the center of the steering wheel. These is one of the several safety tips. Collisions are usually caused by negligent driving, like riving at an unsafe speed,violating traffic signals and stop signs, driving under the influence of alcohol or drugs. To reduce the chance of a collision, you should maintain proper following distance, choose proper lane, drive defensively...