What is the general effect of alcohol or drugs on driving?

Study for the How to Drive Handbook Test. Enhance your understanding with quizzes and detailed explanations. Prepare thoroughly for your driving test!

Drinking alcohol or using drugs slows brain function and dulls the body, making driving much riskier. The correct choice reflects that these substances impair judgment, reaction time, and coordination, which are the core abilities needed to judge gaps and speeds, react to hazards, and control the steering and braking smoothly. When impaired, you may misjudge distances, take longer to react to a sudden stop, and have less precise steering or braking, increasing the chance of a crash. It isn’t true that they improve anything, have no effect, or make you immune to traffic laws. The reliable takeaway is to avoid driving after consuming alcohol or drugs.