Alcohol and Other Drugs — New York Driver's License Practice Test

This chapter covers how alcohol and other drugs impair driving — slower reaction time, poor judgment of speed and distance, and reduced night vision — and why New York treats impaired driving as a leading cause of traffic deaths. It also explains New York's tiered offenses, from Driving While Ability Impaired (DWAI) up through Aggravated DWI, and the BAC (blood alcohol content) thresholds that define each one: 0.05% as legal evidence of impairment, 0.08% as intoxication, and 0.18% as aggravated.

The most-tested material is what BAC actually depends on — the amount you drink, the time between drinks, and body weight — and, just as important, what it does NOT depend on: the type of beverage, fitness level, or tolerance. New York's "Implied Consent" law and the consequences of refusing a chemical test are also frequently tested, along with the zero-tolerance rule for drivers under 21.

A common mistake is believing that coffee, exercise, or a cold shower can sober you up faster — the manual is explicit that only time reduces BAC. Test-takers also sometimes assume beer is "safer" than liquor per drink, when the manual notes that a standard serving of each contains roughly the same amount of alcohol.