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CDL Practice Test: Logbook Rules

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CDL Practice Test: Logbook Rules

Logbook Rules Questions

Click On The Picture To Begin

Good Luck!

Which statement is true?
  • None of these statements are true
  • Washing your truck may be logged as off duty time
  • If you are doing work for your motor carrier but aren't being paid for the work, you may log it as off duty time
  • All time taking care of your truck when it is broken down may be logged as off duty time
This is a question from page 94 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

What Is Off Duty Time?

By understanding the definition of on duty time, you will get a good idea of what is considered off duty time. In order for time to be considered off duty, you must be relieved of all responsibility for performing work and be free to pursue activities of your own choosing.

If you are not doing any work (paid or unpaid) for a motor carrier, and you are not doing any paid work for anyone else, you may record the time as off duty time.

Personal Use Of A Commercial Motor Vehicle

It is possible that occasionally you may not use a truck in commerce at all. You may be moving your personal belongings to a new house or, as a hobby you may be taking your horses to a horse show. As long as the activity is not in support of a business, you are not operating in commerce.

If you are not operating your truck in commerce, you are not subject to the hours of service regulations.

Next

How many violations have occurred on the below log?

  • 2
  • 1
  • 3
  • 0
This is a question from page 102 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Violations: There is a 14 hour rule violation from 5:00 p.m. - 10:00 p.m.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver had 11 hours of driving time available at 2:00 a.m. The driver completed 11 total hours of driving by 10:00 p.m. and went off duty, so there were no violations of the 11 hour rule.

Explanation - 30 Minute Break: Once the driver began driving at 2:00 a.m., a 30 minute break was not needed until 10:00 a.m. (8 hours after first going on duty). Since the driver went off duty at 8:00 a.m. and spent more than 30 minutes off duty (sleeper berth), the driver was never in violation. During the hours of 5:00 p.m. to 10:00 p.m., the driver was only on duty (driving) for 5 hours before moving back to off duty. Even though the 14 hour limit was being violated during that time, the 30 minute break provision was not violated.

Explanation - 14 Hour Limit: After 10 consecutive hours off duty, the driver had 14 hours available beginning at 2:00 a.m. The driver reached the 14 hour limit at 4:00 p.m. and violated the rules by driving an additional 5 hours without first obtaining either: 10 consecutive hours off duty; or 8 consecutive hours in a sleeper berth. To remain in compliance the driver should have either:

  • Obtained one additional hour off duty or in the sleeper berth in the middle of the day (for a total of 10 consecutive hours off duty) or;
  • Remained in the sleeper berth for 8 consecutive hours, rather than only 7. Had the driver remained in the sleeper for 8 consecutive hours, that 8-hour sleeper period would have been excluded from the 14 hour calculation and the driver would have remained in compliance.
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What is the 8 day / 70 hour on duty limit?
  • You are not allowed to be on duty more than 70 hours within the previous 8 days
  • You must have taken at least 70 hours off during the previous 8 days in order to drive legally
  • None of these answers are correct
  • You are not allowed to drive after you've been on duty 70 hours in the previous 8 consecutive days
This is a question from page 93 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

The 8 day / 70 hour limit:

If your company does operate vehicles every day of the week, your employer may assign you to the 70-hour/8-day schedule. This means that you are not allowed to drive after you've been on duty 70 hours in any 8 consecutive days. Once you reach the 70 hour limit, you will not be able to drive again until you have dropped below 70 hours for an 8 consecutive day period. You may do other work, but you cannot do any more driving until you get below the limit. Any other hours you work, whether they are for a motor carrier or someone else, must be added to the total.

TruckingTruth's Advice:

The 8 day / 70hr limit will restrict how much time you're allowed to be on duty during an 8 day period. So if you take a 10 hour break to reset your 11 and 14 hour clocks, but have been on duty / driving for 65 hours in an 8 day period, you will only be able to drive 5 hours.


We'll give you some more examples later on in the program. This can be a little difficult to understand, but try to understand the differences between the 11hr, 14hr, and 70hr clocks.

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What time does a 14 hour rule violation occur?

  • There is no 14 hour rule violation in this example
  • At 3:00 p.m.
  • At 5:00 p.m.
  • At 6:00 p.m.
This is a question from page 104 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:


Violations: There is a 30 minute break violation from 11:00 a.m. to 1 p.m. and again from 5 p.m. to 6 p.m.



Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver was eligible to drive for up to 11 hours beginning at 4:00 a.m. The driver drove only 6 hours, within the legal limit.



Explanation - 30 Minute Break: The driver went on duty at 4:00 a.m. and was eligible to drive during the next 8 consecutive hours until noon. By that time, a 30 minute off duty break would be required. However, the driver never went off duty within that 8 hour period. Therefore, at noon, the driver was in violation of the 30 minute break provision. Since drivers may remain on duty without a 30 minute break, there is no violation during the on duty hours of 1 p.m. to 5 p.m. However, at 5 p.m. the driver returned to driving but still never took 30 minutes off duty. As such, this driver was in violation of the 30 minute break provision again from the hours of 5 p.m. to 6 p.m. To remain in compliance, the driver should have taken a 30 minute off duty break at 10:00 a.m. This would have kept the driver in compliance for both driving periods.



Explanation - 14 Hour Limit: After 10 consecutive hours off duty, the driver had 14 hours available beginning at 4:00 a.m. The driver stopped driving a CMV upon reaching the 14 hour limit at 6:00 p.m., so there are no violations.

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What violation has occurred on the below log?

  • There is an 11 hour rule violation
  • There is a 14 hour rule violation
  • There is a 30 minute break violation
  • There is no violation on this log
This is a question from page 98 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Violations: There are no violations in this example.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver had 11 hours of drive time available starting at 1:00 a.m. The driver drove between the hours of 1:00 a.m. and 6:00 a.m. (5 hours), then again between the hours of 7:00 a.m to 10:00 a.m. (3 hours) and finally between the hours of noon to 2:00 p.m (2 hours). Since the driver was allwed a total of 11 hours of drive time but only drove 10 hours (5 + 3 + 2), no violation occurred.

Explanation - 30 Minute Break: After 10 consecutive hours off duty, the driver went on duty at midnight. At that point, the driver could perform driving duties until 8:00 a.m. before a 30 minute break off duty would be required to continue any driving tasks. After driving for 5 hours (on duty for a total of 6 hours) the driver fulfilled the break requirement by spending 1 hour off duty between the hours of 6:00 a.m. and 7:00 a.m. Starting at 7:00 a.m. the driver was allowed to continue driving for the remainder of his/her available 11 and 14 hour limits.

Explanation - 14 Hour Limit: After 10 consecutive hours off duty, the driver had 14 hours available beginning at Midnight. At 2:00 p.m., the driver had reached the end of the 14 hour window (10 hours driving; 3 hours on duty; 1 hour off duty). The driver may not drive a CMV once he or she has reached the end of the 14 consecutive-hour period and in this example, the driver goes off duty for the required 10 consecutive hours starting at 2:00 p.m.

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On what day and time does a 14 hour rule violation occur?

Day 1

Day 2

  • Day 2 at 2:00 a.m.
  • There is no 14 hour rule violation
  • Day 2 at 5:00 a.m.
  • Day 2 at 4:00 p.m.
This is a question from page 102 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1

Day 2

Violations: There is an 11 hour rule violation from 5:00 a.m. - 7:00 a.m. on Day 2.

Explanation - 11 Hour Limit: After 10 hours off duty, the driver had 11 hours of driving time available at 10:00 a.m. on Day 1. By 2:00 a.m. on Day 2, the driver had 3 hours remaining, and exceeded the limit, by 2 hours, starting at 5:00 a.m. Then, because the driver accumulated at least 10 hours of rest using a combination of at least 8 consecutive hours in a sleeper berth and another break of at least 2 consecutive hours (in this case, 8), he or she was eligible for the split sleeper berth provision. This moves the calculation point to the end of the first of the two periods of rest, or 2:00 a.m. on Day 2. Between 2:00 a.m. and 3:00 p.m., the driver had 5 hours of driving, so at 3:00 p.m. on Day 2 there were 6 hours remaining, which the driver used by 9:00 p.m. Because the driver then took at least 2 consecutive hours off duty, he or she accumulated another 10 hours of rest in two separate, qualifying periods totaling 10 hours. This moves the calculation point again, to 3:00 p.m. on Day 2, and at 11:00 p.m. on Day 2 the driver has 5 hours of driving time remaining.

Explanation - 30 Minute Break: On Day 1, the driver required a 30 minute break at 6:00 p.m. in order to continue driving. But since the driver went into the sleeper berth and stayed there for 8 hours, the requirement was no longer needed. On Day 2, the driver never stayed on duty long enough to require a 30 minute break.

Explanation - 14 Hour Limit: Calculation of the 14 hour limit begins at 10:00 a.m. on Day 1. The driver accumulates 8 hours of driving time by 6:00 p.m. before entering the sleeper berth. Because any sleeper berth period of at least 8 (but less than 10) consecutive hours is excluded from the 14 hour calculation, the driver accumulated just 13 hours by 7:00 a.m. on Day 2. The driver then met the requirements for the split sleeper berth provision, so the calculation point moves to the end of the first qualifying break, or 2:00 a.m. on Day 2. Starting from there, the driver accumulated 11 hours by 9:00 p.m. on Day 2. The driver again met the requirements for the split sleeper berth provision by getting 2 hours of rest, so the calculation point moves to 3:00 p.m. and the driver remains in compliance.

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There will be times when you must take a minimum of a 30 minute break off duty before performing which of the following tasks?
  • Doing your required daily trip inspection
  • Fueling a CMV
  • Loading or unloading freight
  • Driving a CMV
This is a question from page 93 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

30 Minute Break Provision

There are times when you will be required to take a 30 minute break. If you have been on duty for more than 8 consecutive hours without at least 30 minutes off duty, you are not allowed to operate a CMV until a 30 minute break is taken. You may perform other on duty tasks but you cannot drive.

TruckingTruth's Advice:

Your 30 consecutive minute off duty break can be taken either off duty or in the sleeper berth. You may perform any and all on duty tasks without taking a 30 minute break except for any driving tasks. If you have been on duty (driving or not) for 8 hours without taking at least 30 consecutive minutes off duty, you must take the 30 minute break before performing any CMV driving tasks.

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Which violations have occurred in the below example?

Day 1

Day 2

  • There is a 14 hour violation and a 30 minute break violation
  • There is a 14 hour violation and an 11 hour violation
  • There is a 14 hour violation only
  • There is an 11 hour violation only
This is a question from page 101 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1

Day 2

Violations: There is an 11 hour rule violation from 11:00 a.m. - 1:00 p.m., and a 14 hour rule violation from 7:00 a.m. - 1:00 p.m., both on Day 2.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver had 11 hours of driving time available at 10:00 a.m. on Day 1. The driver did not have another 10 hour break (or the equivalent) until 1:00 p.m. on Day 2, so the calculation point never changes. The driver accumulated 7 total hours of driving on Day 1 and reached the 11 hour limit at 11:00 a.m. on Day 2. The violation began when the driver continued driving after that limit.

Explanation - 30 Minute Break: Since the longest consecutive stretch of on duty time was only 6 hours, the driver was never required to take a 30 minute break on either Day 1 or Day 2.

Explanation - 14 Hour Limit: Calculation of the 14 hour limit starts at 10:00 a.m. on Day 1. The 14 hour limit was reached at midnight, and the driver violated the 14 hour rule by driving a CMV starting at 7:00 a.m. on Day 2.

To remain in compliance: The driver should have stayed in the sleeper berth for one additional hour during one of the two sleeper berth breaks. This would have given the driver the equivalent of 10 hours off duty, making him or her eligible for the sleeper berth provision. This would have moved the calculation point to the end of the first of the two breaks (10:00 p.m. on Day 1) and the driver would have remained in compliance on Day 2, in this example.

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