Driver Licensing DUI and Alcohol Laws 2 — Questions and Answers
Question 1: How many drinks does it typically take to impair driving ability in an average adult?
- 5 or more drinks
- 3–4 drinks
- As few as 1–2 drinks (Correct answer)
- Impairment only occurs at the legal 0.08% limit
Correct answer: As few as 1–2 drinks
Research shows that driving ability can be impaired with as few as 1–2 alcoholic drinks, even before reaching the legal BAC limit.
Question 2: Which body organ is responsible for processing alcohol?
- The kidneys
- The stomach
- The liver (Correct answer)
- The lungs
Correct answer: The liver
The liver metabolizes approximately one standard drink per hour — you cannot speed this process up with coffee, food, or exercise.
Question 3: What is a sobriety checkpoint?
- A mandatory rest stop on highways
- A law enforcement stop where all drivers are briefly checked for signs of impairment (Correct answer)
- A location where drug dogs inspect vehicles
- A toll booth with breathalyzer equipment
Correct answer: A law enforcement stop where all drivers are briefly checked for signs of impairment
A sobriety checkpoint (DUI checkpoint) is a brief stop set up by law enforcement to screen all passing drivers for signs of alcohol or drug impairment.
Question 4: Can you be charged with DUI if impaired by prescription medication?
- No — prescription drugs are always legal to take
- Yes — DUI laws apply to impairment from any substance including prescription drugs (Correct answer)
- Only if the medication is a controlled substance
- Only if involved in a crash
Correct answer: Yes — DUI laws apply to impairment from any substance including prescription drugs
DUI laws cover impairment from any substance — including legally prescribed medications — if that substance impairs your ability to drive safely.
Question 5: Which of the following best describes the effect of alcohol on reaction time?
- Alcohol sharpens focus and improves reaction time
- Alcohol slows reaction time and increases stopping distance (Correct answer)
- Alcohol only affects balance, not reaction time
- Effects on reaction time vary — some people are unaffected
Correct answer: Alcohol slows reaction time and increases stopping distance
Alcohol reliably slows neural processing and reaction time in all people, meaning it takes longer to recognize a hazard and brake, significantly increasing stopping distance.
Question 6: What is an ignition interlock device?
- A GPS tracker for newly licensed drivers
- A breathalyzer connected to the ignition that prevents starting if BAC is detected (Correct answer)
- A speed limiter installed on commercial vehicles
- A device that records driving behavior for insurance purposes
Correct answer: A breathalyzer connected to the ignition that prevents starting if BAC is detected
An ignition interlock device requires the driver to blow into a breathalyzer before the vehicle will start; it is commonly required for DUI offenders.
Driver Licensing DUI and Alcohol Laws 2
How many drinks does it typically take to impair driving ability in an average adult?