In Italian vehicle safety and emergency procedures (Codice della Strada), what is the rule regarding the how centrifugal force (forza centrifuga) acting on a turning vehicle changes when speed is doubled?

Answer and explanation

Correct answer: B. It increases fourfold (quadruples)

  1. Step 1: Centrifugal force formula is F = m v^2 / R; squaring speed means doubling velocity multiplies outward centrifugal lateral force by four. Answer: It increases fourfold (quadruples). Why not the others: the other options do not conform to vehicle safety standards and emergency regulations under the Codice della Strada.

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