New Mexico CDL General Knowledge Practice Test (NM) 2

5 out of 5 (69 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As a New Mexican gearing up for your CDL exam, our second NM General Knowledge Practice Test is the ideal platform to strengthen your preparation in 2026. This CDL practice test comprises 20 comprehensive questions, designed to mirror the structure and content of the real DMV permit test. With a focus on multiple-choice and true/false questions, this DMV practice test offers a realistic snapshot of what you can expect on the actual exam day. Our NM CDL general knowledge test practice is uniquely structured to enhance your learning experience. Unlike the time-bound nature of the official CDL test, our permit practice test allows you to delve into each DMV question at your own pace. This flexibility aids in a thorough understanding of each topic, ensuring you're not just memorizing answers, but truly grasping the concepts. This New Mexico CDL practice test covers a wide array of subjects, ranging from pre-trip vehicle inspection to drug and alcohol awareness. It's designed to be comprehensive, touching upon crucial aspects like vehicle control, gear shifting techniques, and effective communication with other road users. This breadth ensures that regardless of whether you're aiming for a Class A or Class B license, or any specific endorsements, you're well-prepared for the general knowledge segment of your CDL written test. Upon completion of this NM CDL general knowledge practice test, you'll receive a detailed summary of your performance. This feedback highlights areas of strength and pinpoints the DMV questions you missed, providing the correct answers for an enhanced learning experience. It's a valuable tool for identifying the topics you need to focus on, ensuring your study time is efficient and targeted. Embrace this opportunity to elevate your understanding and confidence, bringing you one step closer to achieving your CDL in New Mexico in 2026!
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Sample New Mexico CDL Test Questions - General Knowledge

Question 1

Your CMV is disabled on an undivided New Mexico highway with an unobstructed view. Where should the three warning triangles be placed?

  1. A About 100 feet ahead, about 100 feet behind, and within 10 feet of the vehicle
  2. B At 10, 100, and 200 feet behind the vehicle
  3. C At 100, 200, and 500 feet behind the vehicle
  4. D All three within 25 feet of the vehicle

Correct answer: A – About 100 feet ahead, about 100 feet behind, and within 10 feet of the vehicle

On a two-way or undivided highway, warning devices must alert traffic approaching from both directions. Place one approximately 100 feet ahead and another approximately 100 feet behind the stopped vehicle. The third device goes on the traffic side within approximately 10 feet of the vehicle.

Source: New Mexico Commercial Driver’s License Manual — § 2.5.2, “If You Stop on the Road or Shoulder”, 49 CFR § 392.22(b)(1) – Emergency Signals; Stopped Commercial Motor Vehicles

Question 2

Which actions are basic responsibilities at a crash scene when the driver is able to help?

  1. A Protect the area
  2. B Notify the authorities
  3. C Care for injured people
  4. D All of the above

Correct answer: D – All of the above

The three basic crash-scene steps are protecting the area, notifying authorities, and caring for injured people. Protecting the scene helps prevent another collision. Authorities should be contacted, and reasonable assistance should be provided to injured people without unnecessarily moving someone who is severely injured.

Source: New Mexico Commercial Driver’s License Manual — § 2.20, “Accident Procedures”

Question 3

Which practice is recommended when driving a commercial vehicle at night?

  1. A Use high beams continuously
  2. B Watch approaching headlights directly
  3. C Drive slowly enough to stop within the illuminated roadway
  4. D Keep the cab and instrument lights as bright as possible

Correct answer: C – Drive slowly enough to stop within the illuminated roadway

At night, adjust your speed so the vehicle can stop within the distance illuminated by its headlights. Otherwise, a hazard may become visible too late to stop safely. Avoid staring at approaching headlights, and keep instrument lighting only bright enough to read the gauges.

Source: New Mexico Commercial Driver’s License Manual — § 2.11.4, “Vehicle Factors”, New Mexico Commercial Driver’s License Manual — § 2.11.5, “Night Driving Procedures”

Question 4

What does a ROAD WORK 1000 FT sign tell the driver?

This sign warns drivers that _____________.
  1. A The speed limit is reduced for the next 1,000 feet
  2. B Road work is approximately 1,000 feet ahead
  3. C The roadway ends in 1,000 feet
  4. D A railroad crossing is 1,000 feet ahead

Correct answer: B – Road work is approximately 1,000 feet ahead

The ROAD WORK sign provides advance warning of a work area or related roadway restrictions. When the sign displays 1000 FT, the condition is approximately 1,000 feet ahead. Drivers should remain alert for workers, equipment, lane changes, and additional traffic-control devices.

Source: Manual on Uniform Traffic Control Devices, 11th ed. — § 6H.03, “ROAD (STREET) WORK Sign (W20-1)”

Question 5

Approximately how far ahead do properly operating high-beam headlights illuminate the roadway?

  1. A 350 to 500 feet
  2. B 100 to 200 feet
  3. C 200 to 300 feet
  4. D 500 to 700 feet

Correct answer: A – 350 to 500 feet

High beams generally allow a driver to see approximately 350 to 500 feet ahead. The vehicle’s speed must still permit stopping within the visible distance. High beams should be used only when safe and legal and must be dimmed when they would create glare for other drivers.

Source: New Mexico Commercial Driver’s License Manual — § 2.11.4, “Vehicle Factors”, New Mexico Commercial Driver’s License Manual — § 2.11.5, “Night Driving Procedures”

Question 6

A New Mexico school bus driver should adjust the outside convex mirrors to show which areas?

  1. A The entire side of the bus up to the mirror mounts
  2. B The fronts of the rear tires where they touch the ground
  3. C At least one traffic lane on each side of the bus
  4. D All of the above

Correct answer: D – All of the above

Properly adjusted outside convex mirrors show the entire side of the bus up to the mirror mounts. They should also show the fronts of the rear tires touching the ground and at least one traffic lane on each side. Convex mirrors provide a wide view, but objects may appear smaller and farther away than they are.

Source: New Mexico Commercial Driver’s License Manual — § 10.1.4, “Outside Left and Right Side Convex Mirrors”

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