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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!

After taking 10 consecutive hours off duty, a driver begins to work at 8:00 a.m. The driver may operate a commercial motor vehicle until what time?

  • 10:00 p.m.
  • Midnight
  • 6:00 p.m.
  • 8:00 p.m.
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 On 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 on 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 reportable work (performing vehicle maintenance, loading / unloading cargo, fueling, driving, 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 on duty period even if you take some off duty time, such as a lunch break or a nap, during those 14 hours.

TruckingTruth's Advice:

While you are only allowed 11 hours of driving after taking a 10 consecutive hour break, you are able to complete those 11 hours at any point during the 14 hour limit.

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Is the below example a completed 34 hour restart?

Day 1

Day 2

  • None of these answers are correct
  • No, the driver didn't complete two rest periods between 1:00 a.m. and 5:00 a.m.
  • Yes, the restart has been completed
  • No, the driver didn't spend enough time off duty to complete the restart
This is a question from page 105 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Day 1





Day 2







Explanation - 34 Hour Restart: In this example, the 34 hour restart has been completed successfully. The driver took 34 consecutive hours off duty from 1:00 a.m. on Day 1 until 5:00 a.m. on Day 2. Not only does this satisfy the 34 hour consecutive break requirement, but it also satisfies the two required break periods between 1:00 a.m. and 5:00 a.m. At 5:00 a.m. on Day 2, the drivers 34 hour break was completed and his/her 70 hour limit would reset.

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How current must your logbook be?
  • Logs must be filled out at the end of each driving day
  • Your current day log must be filled out within' 48 hours
  • You must show what time you went on duty, then the rest of the log can be filled out when you go off duty for the day
  • It must show your last duty change
This is a question from page 96 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

The current days log must be current to your last change of duty status.

TruckingTruth's Advice:

Quite a few truck drivers are written citations or are placed out of service because their logbooks aren't current. These citations are the result of laziness. You must be current to your last duty status change. So if you are randomly stopped by a police officer and your logbook is checked, it should when you last changed into the driving status.

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What does HOS stand for?
  • Hours on Site
  • Hours of Service
  • Hometime Optimization System
  • Highway Organization System
This is a question from page 92 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

As a truck or bus driver, you'll be required to record and abide by all working and driving limitations which were created by the Department of Transportation (DOT). The rules govern a commercial driver's working and resting hours and are referred to as Hours of Service (HOS) Regulations.

TruckingTruth's Advice:

During the rest of this program, we will be referencing HOS instead of saying Hours of Service every time. As an industry standard, HOS always stands for Hours of Service and the vast majority of people in the trucking industry are very familiar with the term HOS.

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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.
  • Day 2 at 5:00 a.m.
  • Day 2 at 4:00 p.m.
  • There is no 14 hour rule violation
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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Why should you always plan on arriving to your destination as quickly as possible?
  • You might be able to sneak in a 34 hour restart
  • Many things can go wrong along the way
  • All of these are reasons to arrive at your destination as quickly as possible
  • Many customers will give you an earlier appointment time if you show up early, even if they said they wouldn't over the phone
This is a question from page 108 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

Arrive early

It's good practice to always arrive at your destination as quickly as possible. Many things can go wrong along the way. It would be a shame to take your time, only to have something slow you down later on. Always get as close to your customer as possible right away. If you have time to waste, you should waste it near the customer. Far too many drivers lose out on miles because they had a problem en-route and wasted too much time along the way. Not to mention, many customers will give you an earlier appointment time if you show up early, even if they said they wouldn't over the phone.

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What is a 34 hour restart?
  • If you drive less than 34 hours in 7 days, all your hours will reset
  • After you have been on duty for 34 hours, you must take a 70 hour break
  • If you take at least two 17 hour breaks within an 8 day period, all your hours will reset
  • The regulations allow you to "restart" your 60 or 70 hour clock calculations after having at least 34 consecutive hours off duty
This is a question from page 93 - click here to look up the answer

Quote From Page 0 Of The Illinois CDL Manual:

The 34 Hour Restart

The regulations allow you to "restart" your 60 or 70 hour clock calculations after having at least 34 consecutive hours off duty. In other words, after you have taken at least 34 hours off duty in a row, you have the full 60 or 70 hours available again. You would then begin counting hours on the day of the restart and not go back the full 7 or 8 days.

TruckingTruth's Advice:

If you are planning to become an OTR truck driver, you will use the 8 day / 70 hour limit. That means, you are unable to drive once you've been on duty for more than 70 hours within an 8 day period. If you've worked close to that limit, you may want to "reset" the 70 hour limit. The only way to completely reset your 70 hour limit is to take an extended amount of time off duty. If you take 34 consecutive hours off without driving or performing on duty tasks, your 70 hour limit will reset.

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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 1
  • There is a violation on Day 2
  • There is a violation on both Day 1 and Day 2
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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