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Limits practice questions

30 questions from the cdl hours of service and trip planning practice test.

Limits practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

What this covers

Sample questions

A driver comes on duty at 6:00 a.m. and takes a 1-hour off-duty lunch at noon. How does the lunch affect the 14-hour driving window?

  1. The window is pushed back to 9:00 p.m.
  2. The window restarts when lunch ends
  3. The window pauses only if lunch is logged in the berth
  4. The window still closes at 8:00 p.m.
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D. The window still closes at 8:00 p.m.

The 14-hour window runs on the clock from the moment the driver comes on duty and ordinary breaks do not stop it, so it closes at 8:00 p.m. Thinking that an off-duty lunch extends the day by an hour is the classic mistake; only a qualifying split sleeper-berth pairing is excluded.

Reference: 49 CFR 395.3(a)(2)

Which of these satisfies the required 30-minute break from driving?

  1. Two separate 15-minute off-duty rest stops an hour apart
  2. 20 minutes in the sleeper berth plus a 10-minute fuel stop later
  3. Nothing except 30 straight minutes logged as off duty
  4. 30 straight minutes fueling and doing paperwork on duty
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D. 30 straight minutes fueling and doing paperwork on duty

Any period of at least 30 consecutive minutes that is not driving counts, whether it is logged on duty not driving, off duty or sleeper berth. The break must be consecutive, so two 15-minute stops do not add up, and it no longer has to be off duty.

Reference: 49 CFR 395.3(a)(3)(ii)

A carrier does not operate commercial vehicles every day of the week. Which cumulative on-duty limit applies to its drivers?

  1. 70 hours in 8 consecutive days
  2. 60 hours in 8 consecutive days
  3. 70 hours in 7 consecutive days
  4. 60 hours in 7 consecutive days
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D. 60 hours in 7 consecutive days

Carriers that do not run every day of the week must use 60 hours in 7 consecutive days. The 70-hour/8-day schedule is available only to carriers operating every day of the week.

Reference: 49 CFR 395.3(b)(1)

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