DUI Legal and Ethical Standards 1 — Questions and Answers
Question 1: What is the legal blood alcohol concentration (BAC) limit for adult non-commercial drivers in the United States?
- 0.04%
- 0.08% (Correct answer)
- 0.10%
- 0.12%
Correct answer: 0.08%
The federal standard, adopted by all 50 states, sets the per se BAC limit for adult non-commercial drivers at 0.08%.
Question 2: Under implied consent laws, what does a driver agree to by obtaining a driver's license?
- To take a field sobriety test at any traffic stop
- To submit to chemical testing if lawfully arrested for DUI (Correct answer)
- To waive the right to legal counsel during a DUI stop
- To allow warrantless vehicle searches at any time
Correct answer: To submit to chemical testing if lawfully arrested for DUI
Implied consent laws mean that by obtaining a driver's license, a person agrees to submit to chemical testing (breath, blood, or urine) if lawfully arrested for DUI.
Question 3: What is 'administrative per se' in the context of DUI law?
- A criminal charge requiring court conviction before license suspension
- An automatic license suspension triggered by a BAC at or above the legal limit, regardless of criminal outcome (Correct answer)
- A federal standard for BAC testing equipment calibration
- A plea bargain arrangement available only in DUI cases
Correct answer: An automatic license suspension triggered by a BAC at or above the legal limit, regardless of criminal outcome
Administrative per se allows the DMV to automatically suspend a driver's license when their BAC meets or exceeds the legal limit, separate from any criminal DUI proceedings.
Question 4: What is the BAC limit for commercial vehicle drivers under federal law?
- 0.08%
- 0.06%
- 0.04% (Correct answer)
- 0.02%
Correct answer: 0.04%
Commercial drivers are held to a stricter standard of 0.04% BAC because of the increased danger posed by large commercial vehicles.
Question 5: Which federal act established the national minimum drinking age of 21 and tied it to federal highway funding?
- The National Traffic and Motor Vehicle Safety Act
- The National Minimum Drinking Age Act of 1984 (Correct answer)
- The Transportation Equity Act of 1998
- The Safe Roads Act of 1983
Correct answer: The National Minimum Drinking Age Act of 1984
The National Minimum Drinking Age Act of 1984 required states to set the minimum drinking age at 21 or face a 10% reduction in federal highway funding.
Question 6: What ethical obligation does a DUI instructor have when a client makes a credible threat of serious harm to an identifiable person?
- Report the threat only if the client has prior violence convictions
- Breach confidentiality and warn the potential victim and/or law enforcement (Correct answer)
- Maintain confidentiality and document the threat in the client's file only
- Report all such threats to the sentencing court without exception
Correct answer: Breach confidentiality and warn the potential victim and/or law enforcement
DUI instructors must breach confidentiality and warn when a client poses a credible threat of serious harm to an identifiable person, following the duty-to-warn principle established in Tarasoff v. Regents.
Question 7: What is a 'zero tolerance' law in the context of underage DUI?
- No tolerance for recidivism among adult DUI offenders
- A law prohibiting drivers under 21 from driving with any detectable BAC, typically 0.00% to 0.02% (Correct answer)
- A mandatory jail sentence for all first-time DUI offenders
- A policy that eliminates plea bargaining in all DUI cases
Correct answer: A law prohibiting drivers under 21 from driving with any detectable BAC, typically 0.00% to 0.02%
Zero tolerance laws prohibit drivers under 21 from operating a vehicle with any measurable BAC, typically set at 0.00% to 0.02%, because consuming alcohol is illegal for that age group.
DUI Legal and Ethical Standards 1
What is the legal blood alcohol concentration (BAC) limit for adult non-commercial drivers in the United States?