British Columbia Knowledge Test Coach
Alcohol, drugs and fitnessQuestion 3 of 412

What do drugs and alcohol do to a driver?

  1. They make the driver calm and careful.
  2. They improve the driver's view at night.
  3. They cause mental confusion and slow reaction times.
  4. They only affect new drivers.
Show answer

Correct answer: They cause mental confusion and slow reaction times.

Impaired drivers think poorly and react late. This makes serious crashes much more likely.

Source: Learn to Drive Smart (ICBC, 2026), Chapter 1, You in the driver's seat: Be fit to drive, page 6

Practice alcohol, drugs and fitness

Questions last reviewed: 18 October 2026