New Mexico CDL General Knowledge Test (NM) 5

5 out of 5 (43 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Welcome to our New Mexico CDL General Knowledge Practice Test - your essential tool for acing the DMV permit test in 2026! This fifth CDL practice test in our series is specifically designed to enhance your preparation. With 50 thoughtfully crafted NM driving test answers, it mirrors the format and challenges of the actual DMV test, providing you with a comprehensive understanding of what to expect on the big day. Understanding the structure of the DMV written test is crucial, and our New Mexico CDL practice test does just that. With each question formatted as multiple-choice or true/false, you'll get a real feel of the exam environment. This format is instrumental in honing your skills in identifying and eliminating incorrect options, a strategy that's invaluable during the actual DMV permit test in 2026. But it's not just about the format. The content of this NM DMV practice test is meticulously curated to reflect real-life driving scenarios. This bridges the gap between theoretical knowledge and practical application, ensuring that you are not just memorizing facts, but also understanding how they apply in real-world situations. It's this practical approach that can make a significant difference in your test performance. The beauty of our New Mexico CDL general knowledge practice test lies in its consistent nature. No matter how many times you attempt it, the set of CDL test questions and answers remains the same. This allows you to track your progress and focus on areas where you need improvement. Moreover, the no-pressure environment of our general knowledge CDL practice tests offers a relaxed learning space, free from the high-stakes pressure of the actual New Mexico DMV permit test. This stress-free approach is conducive to learning, helping you to absorb information more effectively and confidently. In summary, our fifth New Mexico CDL General Knowledge Practice Test is a comprehensive, practical, and user-friendly tool that will significantly boost your chances of success in the DMV CDL test in 2026. Dive into the practice test today and move one step closer to achieving your CDL!
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Sample New Mexico CDL Test Questions - General Knowledge

Question 1

If the shoulder is clear, why may steering right around an obstacle be safer than steering left?

  1. A. Turning right prevents all skids
  2. B. The right shoulder cannot contain hazards
  3. C. Another vehicle may be passing on your left
  4. D. Turning right guarantees that no collision will occur

Correct answer: C. – Another vehicle may be passing on your left

When an obstacle blocks your path, the safest direction depends on the available space. If the shoulder is clear, moving right may be preferable because another driver could be passing on your left. Check your mirrors and select only a path that can be used safely; neither direction automatically prevents a collision.

Source: New Mexico Commercial Driver’s License Manual — § 2.17.1, “Steering to Avoid a Crash”

Question 2

When a CMV is stopped on a one-way or divided highway in New Mexico, how should three warning devices be spaced?

  1. A. 50, 50, and 50 feet toward approaching traffic
  2. B. 100 feet ahead and 50 feet on each side
  3. C. 10, 100, and 200 feet toward approaching traffic
  4. D. 100 feet in front, 100 feet behind, and 10 feet beside the vehicle

Correct answer: C. – 10, 100, and 200 feet toward approaching traffic

On a one-way or divided highway, place the warning devices toward approaching traffic at approximately 10, 100, and 200 feet from the stopped vehicle. Federal regulations require the devices to be placed as soon as possible and within 10 minutes. The closest device marks the vehicle’s location, while the others provide advance warning.

Source: New Mexico Commercial Driver’s License Manual — § 2.5.2, “Communicating Your Presence”, 49 CFR § 392.22(b)(1) — Emergency Signals; Stopped Commercial Motor Vehicles

Question 3

A truck driver operating in New Mexico must reexamine cargo after which driving interval?

  1. A. One hour or 100 miles, whichever occurs first
  2. B. Two hours or 200 miles, whichever occurs first
  3. C. Three hours or 150 miles, whichever occurs first
  4. D. Four hours or 400 miles, whichever occurs first

Correct answer: C. – Three hours or 150 miles, whichever occurs first

Federal regulations require applicable truck and truck-tractor drivers to inspect cargo and securement devices within the first 50 miles. Cargo must then be reexamined after three hours of driving, after 150 miles, or when the driver changes duty status, whichever occurs first. Exceptions include certain sealed vehicles and loads for which inspection is impracticable.

Source: New Mexico Commercial Driver’s License Manual — § 3.1, “Inspecting Cargo”, 49 CFR § 392.9(b) — Inspection of Cargo, Cargo Securement Devices and Systems

Question 4

When should you select a lower automatic-transmission range for a downgrade?

  1. A. Before beginning the downgrade
  2. B. After the vehicle gains speed on the downgrade
  3. C. Only after entering a curve
  4. D. After reaching the bottom of the grade

Correct answer: A. – Before beginning the downgrade

Select the appropriate low range before starting down a grade. A lower range increases engine braking and prevents the automatic transmission from shifting above the selected gear, unless governed engine speed is exceeded. Waiting until the vehicle has accelerated downhill may make selecting the proper range difficult or unsafe.

Source: New Mexico Commercial Driver’s License Manual — § 2.3.3, “Automatic Transmissions”

Question 5

Some over-the-counter cold medicines can cause driver drowsiness.

  1. A. TRUE
  2. B. FALSE

Correct answer: A. – TRUE

Cold medicines and other prescription or over-the-counter drugs can cause drowsiness or otherwise impair safe driving. Drivers should follow medication warnings and medical instructions carefully. A commercial driver should not operate if a medicine has affected alertness, judgment, coordination, or the ability to control the vehicle safely.

Source: New Mexico Commercial Driver’s License Manual — § 2.22.2, “Other Drugs”

Question 6

When operating a fire extinguisher, you should direct it toward the upper flames.

  1. A. TRUE
  2. B. FALSE

Correct answer: B. – FALSE

Aim the extinguisher at the source or base of the fire rather than at the upper flames. Directing the extinguishing agent above the burning material may fail to control the fire. Stay as far away as practical, position yourself upwind when possible, and use the correct extinguisher for the type of fire.

Source: New Mexico Commercial Driver’s License Manual — § 2.21.3, “Fire Fighting”

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