What specific safety risk is associated with using seat covers that are not securely fitted?

Question

DentroTest · Accepted Answer

The correct answer is that they can cause the driver to slide under the seat belt. This is technically known as the Submarine Effect. For the seat belt to be effective and restrain the body correctly across the pelvic bones (rather than the soft abdomen), the occupant must not slide on the seat. Using non-approved or poorly fitted covers, or accessories like cushions and towels, creates a slippery surface or dangerous slack. In the event of a frontal impact or sudden braking, the body slides under the lap belt, which can cause severe internal injuries, bleeding, or spinal damage. Analysis of other options:   Damage the upholstery: This is an aesthetic or economic inconvenience, but it does not represent a risk to life or road safety.   Increase body heat: Although excessive heat can cause fatigue (active safety), the direct and most serious risk of loose covers is the failure of the restraint system (passive safety).

What specific safety risk is associated with using seat covers that are not securely fitted?

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