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Question 1 of 30
1. Question
1. Under 49 CFR 395.8, what is the minimum age requirement for a driver to be required to use an Electronic Logging Device (ELD)?
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Question 2 of 30
2. Question
2. A driver has been convicted of driving under the influence of alcohol while operating a personal vehicle. What is the consequence for their CDL privileges under 49 CFR 383.51?
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Question 3 of 30
3. Question
3. What is the minimum vision standard for a driver to qualify for a CDL under 49 CFR 391.41(b)(10)?
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Question 4 of 30
4. Question
4. A driver is approaching a railroad crossing with an active warning device. The driver fails to slow down and check that the tracks are clear. What is the disqualification period for this railroad crossing violation under 49 CFR 383.51?
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Question 5 of 30
5. Question
5. Under 49 CFR 391.41, what is the minimum age requirement for a driver to operate a commercial motor vehicle in interstate commerce?
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Question 6 of 30
6. Question
6. A driver’s ELD malfunctions during a trip and displays an error message. Under 49 CFR 395.34, what must the driver do?
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Ready for more practice? This practice test continues your preparation with additional questions covering hours of service and electronic logging devices. Each question is designed to mirror the difficulty and format of the actual CDL written test.
What This Practice Test Covers
This practice test focuses on:
- hours of service and electronic logging devices
- Real-world CDL scenarios
- Questions formatted like the actual DMV test
- Detailed explanations for each answer
Each question helps you build the knowledge and confidence needed for test day. Practice makes perfect — take as many attempts as you need.