Motor Vehicle Division Commercial Vehicle Operations 1 — Questions and Answers
Question 1: What is the minimum age to obtain a Commercial Driver's License (CDL) for interstate commerce in the US?
- 18 years old
- 21 years old (Correct answer)
- 19 years old
- 25 years old
Correct answer: 21 years old
Federal regulations require CDL holders engaged in interstate commerce to be at least 21 years old.
Question 2: Which class of CDL is required to operate a vehicle with a GVWR over 26,001 pounds?
- Class C
- Class B (Correct answer)
- Class A
- Class D
Correct answer: Class B
A Class B CDL is required for single vehicles with a GVWR exceeding 26,001 pounds.
Question 3: How many hours per day may a property-carrying CMV driver operate under federal HOS regulations?
- 10 hours
- 11 hours (Correct answer)
- 12 hours
- 14 hours
Correct answer: 11 hours
Property-carrying drivers may drive a maximum of 11 hours after 10 consecutive hours off duty.
Question 4: What endorsement is required to transport hazardous materials requiring placarding?
- T endorsement
- N endorsement
- H endorsement (Correct answer)
- X endorsement
Correct answer: H endorsement
The H endorsement (Hazardous Materials) is required to transport placardable quantities of hazmat.
Question 5: A commercial driver must submit to alcohol testing within how many hours after a serious accident?
- 4 hours
- 8 hours (Correct answer)
- 12 hours
- 2 hours
Correct answer: 8 hours
Post-accident alcohol testing must be conducted within 8 hours following a qualifying accident.
Question 6: What is the legal blood alcohol concentration (BAC) limit for CDL drivers operating a commercial vehicle?
- 0.08%
- 0.04% (Correct answer)
- 0.02%
- 0.00%
Correct answer: 0.04%
Federal law sets the CDL BAC limit at 0.04%, half the standard 0.08% limit for non-commercial drivers.
Motor Vehicle Division Commercial Vehicle Operations 1
What is the minimum age to obtain a Commercial Driver's License (CDL) for interstate commerce in the US?