Alcohol, Drugs, and Distracted Driving
What this domain tests
This domain tests impairment, distraction, and the decisions that keep a driver capable: no alcohol before driving, no handheld phone use, and no driving when medication or fatigue makes you unsafe.
Core rules
- Alcohol: the commonly enforced adult limit is 0.08% blood-alcohol concentration; commercial and novice drivers should expect zero tolerance. Any alcohol that impairs driving is an offence, even below the number. Alcohol slows reaction, narrows attention, and increases risk-taking.
- Drugs: illegal drugs, cannabis, and many prescription medicines impair coordination and judgment. Read the label; if it warns of drowsiness, do not drive. Mixing alcohol with drugs multiplies impairment.
- Distraction: handheld phone calls, texting, and social media are not permitted while driving. Pull over safely to use a phone. Eating, adjusting the radio, and arguing with passengers also take your eyes and mind off the road.
- Fatigue: drowsy driving causes micro-sleeps. Stop, switch drivers, or rest; caffeine is only a short-term aid.
Worked example
A driver has two beers, feels fine, and drives home. Reaction time is still slower, and attention is narrower. The body clears alcohol at only about 0.015% per hour, so coffee, a cold shower, or fresh air do not speed it up. The safe and lawful choice is not to drive; use a sober driver, taxi, or stay put.
Traps
“I only had one”; “I drive better after a drink”; trusting a phone call at a red light; and assuming prescription medicine is safe because it is legal. Refusing a lawful test or leaving the scene after a crash adds serious consequences.