SD CDL Hours of Service & Driver Fatigue Management 1 — Questions and Answers
Question 1: How many hours may a property-carrying CMV driver drive after 10 consecutive hours off duty?
- 10 hours
- 11 hours (Correct answer)
- 12 hours
- 14 hours
Correct answer: 11 hours
Federal HOS rules allow property-carrying drivers a maximum of 11 hours of driving after 10 consecutive hours off duty.
Question 2: What is the maximum on-duty window (including driving time) allowed for a property-carrying CMV driver in a single shift?
- 11 hours
- 12 hours
- 14 hours (Correct answer)
- 16 hours
Correct answer: 14 hours
Property-carrying drivers cannot drive beyond the 14th consecutive hour after coming on duty, regardless of how many breaks were taken.
Question 3: How many consecutive hours off duty must a property-carrying CMV driver take before being allowed to drive again?
- 8 hours
- 9 hours
- 10 hours (Correct answer)
- 12 hours
Correct answer: 10 hours
Property-carrying drivers must take a minimum of 10 consecutive hours off duty before their 11-hour driving clock resets.
Question 4: After how many hours of driving must a property-carrying CMV driver take a 30-minute rest break?
- 6 hours
- 7 hours
- 8 hours (Correct answer)
- 10 hours
Correct answer: 8 hours
Drivers must take a 30-minute break before driving beyond 8 cumulative hours without an interruption of at least 30 minutes.
Question 5: Under the 60-hour/7-day rule, a driver may not drive after accumulating how many on-duty hours in 7 consecutive days?
- 55 hours
- 60 hours (Correct answer)
- 65 hours
- 70 hours
Correct answer: 60 hours
Drivers who operate CMVs every day of the week may not drive after being on duty 60 or more hours in any 7 consecutive days.
Question 6: Under the 70-hour/8-day rule, a driver may not drive after accumulating how many on-duty hours in 8 consecutive days?
- 60 hours
- 65 hours
- 70 hours (Correct answer)
- 80 hours
Correct answer: 70 hours
Drivers whose carrier operates vehicles every day of the week may use the 70-hour/8-day rule, capping on-duty time at 70 hours in 8 consecutive days.
Question 7: How many consecutive hours off duty are required to use the 34-hour restart provision and reset a driver's weekly on-duty hours?
- 24 hours
- 30 hours
- 34 hours (Correct answer)
- 48 hours
Correct answer: 34 hours
Taking 34 or more consecutive hours off duty allows a driver to restart their 60/70-hour clock, resetting the accumulated weekly on-duty total.
SD CDL Hours of Service & Driver Fatigue Management 1
How many hours may a property-carrying CMV driver drive after 10 consecutive hours off duty?