Alcohol, Drugs, Distraction, Fatigue, and Impaired Driving
What this domain tests
This domain tests alcohol, drug, distraction, and fatigue impairment: legal limits, detection, consequences, and countermeasures. Instructors must teach prevention and legal reality.
Core rules
- New Jersey's DUI limit is 0.08% BAC for drivers 21 and older. For drivers under 21, any BAC of 0.01% or higher violates the underage DUI law.
- Implied consent means a driver suspected of DUI must submit to chemical testing; refusal carries license penalties even without a conviction.
- Prescription and over-the-counter drugs can impair driving; a lawful prescription is not a defense to impaired driving.
- New Jersey prohibits handheld use of a cell phone while driving, including texting and browsing; use hands-free only when permitted and practical.
- Fatigue impairs reaction time and attention; the only reliable remedy is sleep, not caffeine or open windows.
Worked example
A 20-year-old driver blows 0.02% after one drink. The driver is under 21, so 0.02% exceeds the 0.01% underage threshold and supports an underage DUI charge, even though it is below the adult 0.08% limit. The instructor should explain both standards.
Traps that cost marks
Do not say a driver is legal because they feel fine. Do not confuse the adult and underage BAC thresholds. Do not treat a prescription bottle as permission to drive impaired.