Hours of Service Regulations Flashcards

A property-carrying driver starts their on-duty period at 6:00 AM. They drive for 4 hours, take a 2-hour off-duty lunch break, and then resume driving. According to the 14-hour 'driving window' rule, what is the latest time they can legally drive a commercial motor vehicle?

Answer: 8:00 PM

The 14-hour limit begins as soon as the driver comes on duty and runs for 14 consecutive hours. Off-duty breaks for meals or rest do not pause or extend this window. Therefore, 14 hours after 6:00 AM is 8:00 PM.

Which of the following activities is NOT considered 'On-Duty' time under FMCSA Hours of Service regulations?

Answer: Resting in a sleeper berth

According to 49 CFR 395.2, time spent inspecting, servicing, or waiting for the vehicle are all considered on-duty. Time spent resting in a sleeper berth is specifically excluded from the definition of on-duty time.

A driver operating under the 70-hour/8-day limit has the following on-duty hours for the past 7 days: Day 1 (10 hrs), Day 2 (11 hrs), Day 3 (9 hrs), Day 4 (12 hrs), Day 5 (8 hrs), Day 6 (10 hrs), Day 7 (8 hrs). How many hours are available for the driver to work on Day 8?

Answer: 2 hours

The 70-hour limit is a rolling total. The driver has accumulated 10+11+9+12+8+10+8 = 68 on-duty hours over the last 7 days. On Day 8, they have 70 - 68 = 2 hours remaining before hitting the 70-hour limit.

After having 10 consecutive hours off duty, what is the maximum number of hours a property-carrying driver is permitted to DRIVE within the 14-hour window?

Answer: 11 hours

The FMCSA Hours of Service regulations state that within the 14-hour on-duty window, a driver may drive for a maximum of 11 hours. The remaining 3 hours can be used for non-driving on-duty tasks or breaks.

Under the Hours of Service regulations, when is a property-carrying driver required to take a 30-minute break?

Answer: Before accumulating 8 hours of driving time.

The rule requires a driver to take a 30-minute break after 8 cumulative hours of driving time have passed. The break must be taken before driving is continued beyond the 8-hour mark. This break can be off-duty, sleeper berth, or on-duty not driving.

To reset their cumulative 60-hour/7-day or 70-hour/8-day on-duty clock, a driver must take a minimum of how many consecutive hours off-duty?

Answer: 34 hours

The provision known as the '34-hour restart' allows a driver to reset their weekly on-duty hour calculation to zero by taking at least 34 consecutive hours off-duty or in a sleeper berth.