When adjusting the driver's seat for a proper driving position, how should the upper back be supported?

Question

DentroTest · Accepted Answer

The correct answer is to support it completely without leaving a gap. Detailed explanation: Passive Safety: The seatback should be as vertical as possible. If there is a gap between your upper back and the seat, the risk of whiplash and spinal injuries increases drastically in the event of a rear-end collision, as the body will slam into the seat rather than being supported by it. Vehicle Control: Full back contact allows the driver to feel the car's inertia and movements, enabling quicker reactions. Why gaps are wrong: Leaving a 10 or 20 cm gap implies a reclining position. This is dangerous as it distances the driver from the controls, reduces visibility, and increases the risk of the 'submarine effect' (sliding under the seatbelt during an impact).

When adjusting the driver's seat for a proper driving position, how should the upper back be supported?

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