What is DWAI (Driving While Ability Impaired) in New York?

What the Law Says

New York law defines DWAI as operating a vehicle while impaired by alcohol, drugs, or a combination — even when blood alcohol content (BAC) is below the DWI threshold of 0.08%.

DWAI is governed by Vehicle and Traffic Law (VTL) § 1192(1), which prohibits driving 'while ability to operate a vehicle is impaired by the consumption of alcohol.' Unlike DWI (VTL § 1192(2) or (3)), DWAI does not require proof of a specific BAC level — impairment can be shown by observed driving behavior, field sobriety tests, or other evidence.

For alcohol-related DWAI, VTL § 1192(1) applies when BAC is between 0.05% and 0.07%, creating a 'per se' presumption of impairment. A BAC under 0.05% does not preclude a DWAI charge if other evidence shows impairment.

DWAI is classified as a traffic violation (not a misdemeanor or felony), but repeat offenses within 10 years escalate penalties. The lookback period for prior DWAI/DWI convictions is 10 years for sentencing enhancements under VTL § 1193(1)(a).

Statutory Text

A person is guilty of driving while ability impaired by alcohol when such person operates a motor vehicle while such person's ability to operate such motor vehicle is impaired by the consumption of alcohol.

— Vehicle and Traffic Law § 1192(1) — Driving while ability impaired

Statutory Text

Upon conviction of a first violation… the court shall sentence such person to pay a fine of not less than three hundred dollars nor more than five hundred dollars… and may sentence such person to imprisonment for not more than fifteen days.

— Vehicle and Traffic Law § 1193(1)(a) — Penalties for first DWAI offense

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