Is it correct for the driver of a passenger car to use a cushion on their seat?
A)Yes, because the extra height improves the driver's field of vision.
B)Yes, because the driver is more comfortable.
C)No, because it can limit the effectiveness of the seatbelt.Correct
The submarine effect — which occurs when the seatbelt is unable to restrain us in a traffic accident and we slide under its abdominal strap — can easily occur if the seatbelt is not properly fitted to the body. It is therefore important to avoid driving in very bulky clothing and never to use clips, cushions, or other devices to loosen the seatbelt.