How can a driver determine the correct distance from the steering wheel?

To determine the correct distance from the steering wheel, extending the arm over the steering wheel until it aligns with the wrist joint is the most effective method. This technique ensures that the driver maintains an appropriate distance that allows for both comfort and control. By positioning the wrist at the top of the steering wheel, the driver can have a firm grip while still being able to fully extend their arms for optimal steering maneuvers.

Leaning back in the seat may create an unsafe distance that hinders control of the vehicle, while the idea of keeping a fist's distance does not provide as precise guidance as aligning the wrist joint with the wheel. Adjusting the seat after starting to drive can be dangerous, as it may lead to distractions or a loss of control while on the road. Therefore, the method of extending the arm to the wrist provides the best guideline for maintaining safe and effective driving posture.