Alcohol, Drugs, and Driving Flashcards

In South Dakota, what is the legal blood alcohol concentration (BAC) limit for non-commercial drivers age 21 and older?

Answer: 0.08%

South Dakota law sets the legal BAC limit at 0.08% for drivers age 21 and older operating non-commercial vehicles.

Under South Dakota's Zero Tolerance Law, a driver under age 21 can be charged with a DUI if their BAC is at or above:

Answer: 0.02%

South Dakota's Zero Tolerance Law prohibits drivers under 21 from operating a vehicle with a BAC of 0.02% or higher.

What is the BAC limit for commercial vehicle drivers in South Dakota?

Answer: 0.04%

Commercial vehicle drivers in South Dakota are held to a stricter standard of 0.04% BAC, half the limit for regular drivers.

South Dakota's implied consent law means that by driving on public roads you have automatically agreed to:

Answer: Submit to a chemical test if an officer suspects impairment

Implied consent means that by driving on South Dakota public roads, you agree to submit to a chemical test (breath, blood, or urine) if law enforcement suspects impairment.

If you refuse a chemical test when lawfully requested by an officer in South Dakota, your driver's license will be:

Answer: Revoked for 1 year

Refusing a lawfully requested chemical test in South Dakota results in a mandatory one-year license revocation under the implied consent law.

Alcohol primarily affects driving ability by:

Answer: Slowing reaction time and impairing judgment

Alcohol slows reaction time, impairs judgment, reduces coordination, and diminishes the ability to track moving objects, all of which are critical for safe driving.

Which of the following is the only reliable method to sober up after drinking alcohol?

Answer: Allowing time to pass

Only time allows the liver to metabolize alcohol; coffee, food, and cold showers may make you feel more alert but do not lower your BAC.