HOW DO POLICE FIND OUT IF A DRIVER IS

UNDER THE INFLUENCE?

Driving under the influence

Driving erratically

If an officer sees someone driving erratically, they can usually tell if someone is driving under the influence by using some of the following signs.

Driving erratically

Swerving Unnecessary stopping

Speeding or driving too slow

Running a red light

Reckless driving

Driving with a broken tail light

Witnesses

The police can find out if someone is committing DUI if they saw the act themselves, received a report through the radio, or a witness reported to them.

Witnesses

Witnessed by the officer themselves

Witnessed by other people

Reports over the radio

Observing behavior consistent with intoxication

If the police has stopped your car or is patrolling on foot, they will usually notice if someone is drunk, and determine if they are fit for driving.

Observing behavior consistent with intoxication

Failing field sobriety tests

Drowsiness Aggression

Slurred speech Unstable movement or posture

Incriminating evidence

The police use supporting evidence to claim that the driver is driving while intoxicated. Drivers can still be arrested if their BAC is over the limit within 2 hours after driving.

Incriminating evidence

Presence of alcoholic beverages

in the vehicle

In a location they can only reach by

driving

Social media Smell of alcohol or intoxicating substances

BAC Testing

A person cannot be charged if they just look drunk, they have to be intoxicated enough to be judged too inebriated to drive. Thusly, tests will be performed on the alleged drunk driver. If they also find that the driver is beyond the BAC limit, they can be charged with drunk driving.

BAC Testing

Refusing to be tested

Breathalyzers

Urine testing Blood testing