If you imagine the steering wheel as a clock, you should keep your hands firmly on the steering wheel in the quarter-to-three position. Keep each hand on either side of the steering wheel, and do not cross one hand over the other when turning. This hand position allows you to manoeuvre the car in the best possible way and minimises the risk of being injured if the airbag in the steering wheel is deployed during a collision.
In the past, it was said that the correct way to hold the steering wheel was in the ten-to-two position, but that was before cars were equipped with an airbag in the steering wheel. If you hold your hands in that position during a collision, the airbag can knock your hands into your face, causing serious injury.