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CDL Practice Test: Logbook Rules

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CDL Practice Test: Logbook Rules

Logbook Rules Questions

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Good Luck!

Which violation occurs on the below example?

  • There is an 11 hour rule violation
  • There is a 30 minute break violation
  • There are no violations on this log
  • There is a 14 hour rule violation
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 is a 14 hour rule violation from 9:00 p.m. - 10:00 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 2:00 a.m. The driver drove for just 1 hour between 9:00 p.m. and 10:00 p.m., far below the 11 hour driving limit.

Explanation - 30 Minute Break: The driver never drove a CMV after being on duty for more than 8 hours. Therefore, no violation has occurred.

Explanation - 14 Hour Limit: After 10 consecutive hours off duty, the driver had 14 hours available beginning at 2:00 a.m. Because the 14 hour calculation includes all off duty time of less than 10 consecutive hours, all of this driver's time between 2:00 a.m. and 10:00 p.m. is included in the calculation. Even though the driver spent 9 consecutive hours off duty, the 14 hour limit does not get extended. In order for an 8 consecutive hour (or longer) break to extend the 14 hour limit, the 8 consecutive hours must occur in the sleeper berth. However, the driver could have spent 10 hours off duty and both the 11 and 14 hour limits would have reset. The driver reached the 14 hour limit at 4:00 p.m. and violated the 14 hour rule at 9:00 p.m. by driving a CMV beyond the 14 hour duty limit.

NOTE: Even though this driver had 10 hours off duty during the day and only drove for 1 hour, that hour of driving was done in violation of the 14 hour rule. The driver did not obtain another 10 consecutive hours off duty, so the calculation point does not change and the 9-hour break must be included in the calculation of the 14 hour limit. After 10:00 p.m., the driver must be off duty for at least 10 consecutive hours, or in a sleeper berth for at least 8 consecutive hours, before driving again.

To remain in compliance: The driver should not have driven after 4:00 p.m., which was the end of the 14 hour limit. If he or she had gone into a sleeper berth for the 9 hour break, that break would have been excluded from the 14 hour calculation and the driver would have remained in compliance. Furthermore, the driver could have elected to remain off duty until 10:00 p.m. for a total of 10 hours off duty which would have reset both the 11 hour and 14 hour limits.

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Which day on the example below contains a violation?

Day 1

Day 2

  • There are no violations on Day 1 or Day 2
  • There is a violation on Day 2
  • There is a violation on both Day 1 and Day 2
  • There is a violation on Day 1
This is a question from page 100 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1

Day 2

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. The starting calculation point on Day 1 is 11:00 a.m. The driver drove between the hours of 11:00 a.m. to 1:00 p.m. (2 hours) then again between 4:00 p.m. to 6:00 p.m. (2 hours) and finally between 7:00 a.m. to 11:00 p.m. (4 hours) for a total of 8 hours of drive time on Day 1. On Day 2, the driver took 10 consecutive hours off duty (split between off duty and sleeper berth time) which reset the 11 hour limit. The new calculation point for Day 2 is 1:00 p.m. when the driver first began driving that day. Since the driver only drove between the hours of 1:00 p.m. to 5:00 p.m. (4 hours), no violation occurred.

Explanation - 30 Minute Break: A driver may drive only if 8 hours or less have passed since the end of the driver’s last off duty period of at least 30 minutes. In this example, the starting calculation point is at 10:00 a.m. on Day 1. The driver was on duty for 1 hour, drove for 2 hours, was on duty for 3 hours, and then drove 2 more hours - totaling 8 hours (combined driving and on duty time) without taking any time off duty. At 6:00 p.m. on Day 1, the driver takes the required minimum 30 minute off duty break until 6:30 p.m. This allowed the driver to legally complete the 14 hour window at Midnight with 4 more hours of driving and 1 hour of on duty time. While the driver was on duty for 9 hours on Day 2, the driver stopped driving for the day at 5:00 p.m., only 7 hours after taking his/her last off duty break. Therefore, no 30 minute break was required and no violation occurred. The hours spent on duty from 5:00 p.m. to 7:00 p.m. were legal because no actual driving took place.

Explanation - 14 Hour Limit: After 10 consecutive hours off duty, the driver had 14 hours to perform all driving tasks starting at 10:00 a.m. on Day 1. At Midnight, exactly 14 hours later, the driver went off duty for 10 consecutive hours (combination of off duty and sleeper berth) which reset the 14 hour limit. The new starting calculation point for the 14 hour limit was 10:00 a.m. (the first point at which the driver went on duty after taking 10 consecutive hours off duty). After 9 hours of performing a combination of on duty and driving tasks, the driver switched to the sleeper berth for the remainder of Day 2, thus, no violation occurred.

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If you have used up all of your 14 hour on duty time, how many hours would you regain after an 8 hour break in the sleeper berth?
  • You will still have no hours remaining
  • You would regain half of your hours (7 hours total)
  • Your 14 hour limit would reset
  • None of these answers are correct
This is a question from page 95 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Eight hours of sleeper berth time:

You may also use the sleeper berth to extend the 14 hour limit. Any period in the sleeper berth of at least 8 consecutive hours will not count as part of the 14 hours, and, therefore, would allow you to extend the time during which you could use your maximum 11 hours of driving.

TruckingTruth's Advice:

An 8 hour break will never add more hours to any of your limits. Rather, an 8 hour break simply extends your time by not counting the break against your 14 hour duty clock. The concept is confusing, but it's actually very simple. Here are some examples.

  • If you have 5 hours remaining on your 14 hour duty clock then go into the sleeper berth for 8 hours, at the end of your break you will still have 5 hours remaining.
  • If you have 1 hour remaining on your 14 hour duty clock then go into the sleeper berth for 8 hours, at the end of your break you will still have 1 hour remaining.
  • If you have 0 hours remaining on your 14 hour duty clock then go into the sleeper berth for 8 hours, at the end of your break you will still have 0 hours remaining.
  • As you can see, you will not gain any hours back after taking an 8 hour break. Instead, your available hours have simply been extended.

    So why would you ever want to take an 8 hour break instead of a 10 hour break? Here's an example:

    Let's say you have a delivery in the morning, but you are not allowed to park at your delivery location overnight. Instead, you have to stop at a truck stop 20 miles away to park for the night. In order to make your appointment on time, you must leave after only resting for 8 hours. If that's the case, you can still make the delivery on time by taking an 8 hour break instead of a full 10 hour break.

    Little situations like this will come up frequently as a truck driver. That's why it's so important to understand these little loopholes and tricks. We'll go through more examples later on in this section, but try to have a full understanding of the 10, 8 and split sleeper rules.

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What violations occurred on the below example?

  • There are no violations on this example
  • There is an 11 hour rule violation and a 30 minute break violation
  • There is a 30 minute break violation
  • There is a 14 hour rule violation and a 30 minute break violation
This is a question from page 101 - 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 p.m. to midnight.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver was eligible to drive for up to 11 hours beginning at midnight. The driver drove for 5 hours before obtaining 10 consecutive hours off duty using a combination of consecutive off duty and sleeper berth time. This 10 hour break moves the calculation point to 3:00 p.m., at which point the driver had another 11 hours available. Because the driver then drove for only 9 hours (out of an available 11), there are no violations.

Explanation - 30 Minute Break: After taking 10 consecutive hours off duty from 5:00 a.m. to 3:00 p.m., the driver was eligible to drive for 11 hours. However, the driver did not meet the 30 minute break provision requirements. At 11 p.m., the driver had been on duty longer than 8 consecutive hours without a 30 minute break. As such, the driver was not allowed to operate a CMV from the hours of 11:00 p.m. to Midnight.

Explanation - 14 Hour Limit: After 10 consecutive hours off duty on the previous day, the driver had 14 hours available beginning at Midnight. The driver accumulated just 5 on duty hours before going off duty for another 10 consecutive hours. The calculation point then moves to 3:00 p.m., and after that point the driver accumulated 9 hours on duty which is within the legal 14 hour limit.

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Is there a 14 hour rule violation on Day 2?

Day 1

Day 2

  • No 14 hour rule violation occurs
  • Yes, at 1:00 a.m.
  • Yes, at 7:00 a.m.
  • Yes, at 9:00 p.m.
This is a question from page 100 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1

Day 2

Violations: There are no violations in this example.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the driver had 11 hours of driving time available beginning at 2:00 a.m. on Day 1. The driver used those 11 hours by 4:00 p.m. on Day 1, when he or she entered the sleeper berth for 8 consecutive hours. Because the driver accumulated at least 10 hours of rest using a combination of at least 8 consecutive hours in a sleeper berth (4:00 p.m. to Midnight on Day 1) and another break of at least 2 consecutive hours (8:00 a.m. to 10:00 a.m. on Day 1), 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 10:00 a.m. on Day 1. Starting the calculation from there, the driver accumulated another 10 hours of driving by 5:00 a.m. on Day 2. By 7:00 a.m. on Day 2, the driver accumulated another pair of qualifying breaks totaling at least 10 hours [4:00 p.m. to Midnight on Day 1 (8 hours) and 5:00 a.m. to 7:00 a.m. on Day 2 (2 hours)]. This moves the calculation point again, to the end of the first of the two breaks, or Midnight beginning Day 2. From there, the driver accumulated another 10 hours of driving by 1:00 p.m. on Day 2. The pattern of 8/2 split sleeper berth provisions continued, with no 11 hour violations.

Explanation - 30 Minute Break: On Day 1, the driver spent a total of 12 hours split between on duty and driving time. In order to continue driving beyond the 8th hour, a 30 minute break must be recorded. The calculation point on Day 1 is 2:00 a.m., so in order to continue driving after 10:00 a.m. (8 hours later), a minimum of 30 minutes must be spent off duty. In this example, the driver spent 2 hours in the sleeper berth from 8:00 a.m. to 10:00 a.m. and this satisfies the 30 minute break requirement, so no violation occurred. On Day 2, the driver first went on duty at midnight. In order to drive a CMV after 8:00 a.m. (8 hours later) a minimum of a 30 minute break off duty would be required. The driver met that requirement by taking a 2 hour break off duty (sleeper berth) break between 5:00 a.m. and 7:00 a.m. The hours spent driving between 9:00 p.m. and Midnight on Day 1 are also legal since an 8 hour break was taken between 1:00 p.m. and 9:00 p.m.

Explanation - 14 Hour Limit: Calculation of the 14 hour limit begins at 2:00 a.m. on Day 1. The driver accumulates 14 hours by 4:00 p.m. before entering the sleeper berth. Because the driver then met the requirements for the split sleeper berth provision, the calculation point moves to the end of the first qualifying break, or 10:00 a.m. on Day 1. So at Midnight leading into Day 2, the driver had accumulated 6 hours. By 7:00 a.m. on Day 2, the driver accumulated another pair of qualifying breaks totaling at least 10 hours and has not exceeded the 14 hour limit. This moves the calculation point again, to the end of the first of the two breaks, or Midnight leading into Day 2. From there, the driver accumulated 13 of 14 hours by 1:00 p.m. on Day 2. This split sleeper berth pattern continued, with no 14 hour limit violations.

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Which day below contains a violation?

Day 1

Day 2

  • Day 2 contains at least 1 violation
  • Day 1 contains at least 1 violation
  • Both days contain at least 1 violation
  • There are no violations on either day
This is a question from page 103 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Logging Example #23

Day 1

Day 2

Violations: There is a 30 minute break violation from 6:00 p.m. to 7:00 p.m. on Day 1. There is also a 14 hour rule violation on Day 2 from 5:00 p.m. - 9:00 p.m.

Explanation - 11 Hour Limit: After 10 consecutive hours off duty, the initial calculation point for this driver's 11 hour driving limit is 10:00 a.m. on Day 1. The driver drove 9 hours that day before taking 8 hours off duty in the sleeper berth, leaving 2 hours of driving time available at 3:00 a.m. on Day 2 (the 8 hour sleeper berth period does not result in extra driving time). The driver used those 2 hours and reached the 11 hour limit at 5:00 a.m. when he or she had to stop driving. Then the driver went off duty for at least 2 consecutive hours (8 hours off duty total) to take advantage of the sleeper berth provision. He or she 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. This moves the 11 hour calculation point to the end of the first of the two qualifying breaks, or 3:00 a.m. on Day 2. Between 3:00 a.m. and 1:00 p.m. on Day 2, the driver had 2 hours of driving, so at 1:00 p.m. there were 9 hours of driving remaining (11 - 9) and the driver stayed within that limit.

Explanation - 30 Minute Break: On Day 1, the driver had been on duty since 10:00 a.m. and was required to take at least a 30 minute break before driving beyond 6:00 p.m. Therefore, the driver was in violation of the 30 minute break provision from 6:00 p.m. to 7:00 p.m. on Day 1. On Day 2, the driver was on duty for a total of 8 hours between 1:00 p.m. and 9:00 p.m. Since the driver went off duty at 9:00 p.m., exactly 8 consecutive hours after first going on duty (driving), no violation occurred.

Explanation - 14 Hour Limit: Calculation of the 14 hour limit starts at 10:00 a.m. on Day 1, but does not include the 8-hour sleeper-berth period (7:00 p.m. on Day 1 to 3:00 a.m. on Day 2) because any sleeper period of at least 8 but less than 10 consecutive hours is excluded from the 14 hour calculation. So by 5:00 a.m. on Day 2, the driver used 11 hours driving and had 3 hours remaining out of the 14 hours allowed. But at 5:00 a.m., the driver went off duty for at least 2 hours, making him or her eligible for the split sleeper berth provision. This moves the calculation point for the 14 hour limit to the end of the first of the two rest periods used to obtain 10 hours off duty, or 3:00 a.m. on Day 2. consecutive hours after 3:00 a.m. is 5:00 p.m., when this driver should have stopped driving but did not.

NOTE: Any period of off duty time less than 10 hours (such as this driver's 8 hour off duty break on Day 2) is included in the 14 hour calculation. Also note that the driver's 8 hour sleeper berth period allowed him or her to drive during the 18th and 19th hour after first coming on duty, but it did not by itself give the driver additional driving time beyond 11 hours.

To remain in compliance, the driver should have stopped driving at 5:00 p.m. on Day 2. The driver would have remained in compliance if he or she had gone off duty for 10 hours on Day 2 instead of just 8, or if he or she had spent those 8 hours in a sleeper berth.

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What violation occurs in the example below?

Day 1

Day 2

  • There are no violations
  • There is a 30 minute break violation
  • There is a 14 hour rule violation
  • There is an 11 hour rule violation
This is a question from page 100 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1

Day 2

Violations: There are no violations in this example.

Explanation - 11 Hour Limit: On Day 1, the driver began operating a CMV at 10:00 a.m. and was allowed to drive for 11 hours. The driver drove for exactly 8 hours before switching back to the sleeper berth for the remainder of the day. On Day 2, the driver used the split sleeper berth provision and spent a total of 11 hours driving which is within the legal HOS limits.

Explanation - 30 Minute break: Since the driver was only on duty for a total of 8 hours on Day 1, a 30 minute break was never required. A 30 minute break is only required if a driver wants to operate a CMV and it has been more than 8 hours since the last off duty period of at least 30 minutes. On Day 2, the driver fulfilled the 30 minute break provision by taking 1/2 hour off duty from 1:00 p.m. to 1:30 p.m. Had the driver not taken that break, he/she would have violated the provision from 2:00 p.m. until 3:30 p.m. However, in this case, no violation occurred.

Explanation - 14 Hour Limit: After spending 10 consecutive hours off duty on Day 1, the driver switched his/her status to driving at 10:00 a.m. This is the starting calculation point for the 14 hour limit. Therefore, the driver had until Midnight on Day 1 to complete all driving tasks. Since the driver switched back into the sleeper berth at 6:00 p.m. and remained there for the rest of the day, no violation occurred on Day 1. The driver took an 8 hour break in the sleeper berth from 6:00 p.m. on Day 1 until 2:00 a.m. on Day 2. Those 8 hours spent in the sleeper berth do not count against the drivers 14 hour limit (per the 8 hour sleeper berth provision). So at 2:00 a.m. on Day 2, the driver still had 6 hours remaining on his/her 14 hour limit (14 available hours - 8 hours of on duty time before the 8 hour break = 6 hours remaining). The driver used up 2 of those hours driving between 2:00 a.m. and 4:00 a.m., leaving 4 hours before the 14 hour limit expires. By switching into the sleeper berth for 2 additional hours, a split sleeper berth provision was completed (8 hours off duty followed by 2 hours off duty). At that point, we can simply subtract the 2 hours of drive time and the 2 hours of sleeper berth time from our new 14 hour limit for a total of 10 hours remaining beginning at 6:00 a.m. Since the driver went back into the sleeper berth exactly 10 hours later at 4:00 p.m., no violation occurred.

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What does the 14 hour on duty limit mean?
  • From the time you first go on duty after a 10 consecutive hour break, you are allowed 14 consecutive hours to use your 11 hour drive time
  • You are allowed to drive for 7 hours then must take a 7 hour break
  • You must rest for at least 14 consecutive hours each day
  • You can drive up to 14 consecutive hours per day
This is a question from page 93 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

The 14 Hour Duty Limit

This limit is usually thought of as a "daily" limit, even though it is not based on a 24 hour period. You are allowed a period of 14 consecutive-hours of duty time after being off duty for 10 or more consecutive hours. The 14 consecutive hour duty period begins when you start any kind of work (performing vehicle maintenance, loading / unloading cargo, fueling, etc.). Once you have reached the end of this 14 consecutive hour period, you cannot drive again until you have been off duty for another 10 consecutive hours.

Your driving is limited to the 14 consecutive hour duty period even if you take some off duty time, such as a lunch break or a nap, during those 14 hours.

Example: You have had 10 continuous hours off and you begin working at 6:00 a.m. (vehicle inspection, fueling, loading / unloading freight, etc.). You must not drive your truck after 8:00 p.m. that evening. You may do other work after 8:00 p.m.(load / unload freight, perform maintenance duties, etc.), but you cannot do any more driving until you have taken another 10 consecutive hours off.

TruckingTruth's Advice:

The 14 hour rule quite simply means that as soon as you begin working for the day, regardless of what time it is, you have 14hrs to complete your day. Once your 14 hours are up, you may not drive again until you have had a minimum of 10 consecutive hours off duty, at which point, your 14 hour clock will reset.

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