Why is tailgating dangerous even if the car ahead brakes gently?

Answer and explanation

Correct answer: A. The gap may be under your reaction distance

  1. Step 1: Reaction time alone uses up distance. Step 2. A gap shorter than thinking distance guarantees a collision. Answer: The gap may be under your reaction distance. Why not the others: The lead car's brake lights will dazzle you: brake lights are not the cause. The engine overheats when the gap is short: gaps do not affect engine temperature. Tyres wear faster in the slipstream: tyre wear is not the danger.

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