HOS Regulations Flashcards
5 cards from real FMCSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 5 HOS Regulations flashcards as text
What is the maximum number of hours a commercial driver can drive in a single day before they are required to take a 10-hour break?
Answer: 11 hours
Under FMCSA Hours of Service (HOS) regulations, a commercial driver is permitted to drive a maximum of 11 hours within a 14-hour on-duty window. After completing these 11 driving hours, or reaching the end of the 14-hour on-duty period, the driver is required to take a mandatory 10 consecutive hours of off-duty time before driving again.
Under the 14-hour rule, how long can a driver be on duty before they must stop driving?
Answer: 14 hours
The 14-hour rule dictates that a commercial driver cannot drive after being on duty for 14 consecutive hours. This 14-hour period begins when the driver starts their workday and includes all on-duty time, such as driving, loading, unloading, and inspections, regardless of whether they have used all their 11 driving hours. Once this 14-hour window is exhausted, the driver must take a 10-hour off-duty break.
How many consecutive hours of off-duty time are required to reset the 60/70-hour weekly limit under the FMCSA HOS regulations?
Answer: 34 hours
To reset the 60/70-hour weekly limit under FMCSA HOS regulations, a commercial driver must take at least 34 consecutive hours of off-duty time. This "34-hour restart" allows drivers to begin a new 60-hour (for 7-day operations) or 70-hour (for 8-day operations) work week, effectively resetting their cumulative on-duty time.
After how many hours of driving without a break is a driver required to take at least a 30-minute break?
Answer: 8 hours
FMCSA regulations require a commercial driver to take at least a 30-minute off-duty break after 8 cumulative hours of driving. This break must be taken before the driver can continue driving, ensuring they have adequate rest during long shifts to maintain alertness and safety.
What is the maximum on-duty time a driver can have in a 7-day period according to the 60/70-hour rule?
Answer: 60 hours
Under the 60/70-hour rule, a driver operating for a carrier that does not operate every day of the week (i.e., 7-day operation) is limited to a maximum of 60 hours on-duty in any 7-consecutive-day period. For carriers operating every day (8-day operation), the limit is 70 hours in 8 consecutive days.