Free, full New Mexico CDL general knowledge test practice right here in your browser — real exam format (50 questions, 80% to pass), diagnostic and adaptive modes, spaced-repetition review, and a readiness dashboard. No signup, no paywall — your progress is saved automatically on this device. Matched to the official MVD knowledge exam.
What is the correct way to stop a trailer that has begun to sway?
D. Release the accelerator to slow down; do NOT brake hard or apply the trailer hand valve — When a trailer begins to sway, release the accelerator to reduce speed. Do NOT apply the service brakes suddenly (this can cause jackknife) and do NOT use the trailer hand valve (which can make sway worse). Let the vehicle slow naturally.
What must you do before crossing a state line while transporting hazardous materials?
B. Verify that the HazMat regulations of the state you are entering allow the materials and routing — HazMat routing rules vary by state. Some materials require specific routes or are prohibited on certain roads within specific states. Before crossing state lines with HazMat, verify the destination state allows your specific cargo and chosen route.
When backing a tractor-trailer, you should:
B. Get out and walk the area first, then use mirrors and back slowly — use a spotter when possible — GOAL — Get Out And Look — before every backing maneuver. Walk the area to identify hazards, then back slowly using both mirrors. Use a spotter (outside the vehicle to your left side) when available.
Which of the following best describes a 'jackknife'?
B. The trailer swings out and forms an angle with the tractor — A jackknife occurs when the trailer swings outward relative to the tractor (like a folding knife blade), usually caused by the drive wheels locking up. Proper braking technique and ABS help prevent jackknifing.
When approaching to couple to a trailer, you should stop with the fifth wheel gap:
B. Just under the trailer nose — slightly in front of the kingpin landing zone — Back under the trailer until the fifth wheel just contacts the nose of the trailer. The fifth wheel should be aligned so the kingpin will engage properly when the tractor backs completely under.
CDL safety scenario 23: When driving a long commercial vehicle, why should you make turns slowly?
B. Off-tracking can cause the rear wheels to cut across curbs or lanes — Off-tracking can cause the rear wheels to cut across curbs or lanes. Commercial drivers are expected to manage this situation before it becomes a crash risk. The CDL manual emphasizes controlling the vehicle, inspecting safety-critical systems, and correcting hazards promptly.
If your commercial vehicle is hydroplaning, you should:
A. Release the accelerator and steer straight — When hydroplaning, release the accelerator, do not brake, and keep the steering wheel straight until traction is regained.
When making a turn in a doubles combination, drivers must be especially careful because:
B. The additional trailer extends the tail swing and off-tracking significantly further than a single trailer combination — Additional trailers increase both the tail swing (rear trailer swings outward in turns) and off-tracking (rear axles cut the inside of a turn). Extra width and clearance must be maintained throughout any turn.
If your vehicle begins to hydroplane, you should:
B. Release the accelerator and avoid braking until the tires regain contact with the road — During hydroplaning, tires lose contact with the road and braking or steering can cause a skid. Ease off the accelerator gently and avoid braking until the tires regain contact and traction returns.
What is the penalty for a CMV driver who provides false information on their CDL application?
D. Both a fine up to $5,000 and/or disqualification — Providing false information on a CDL application can result in CDL disqualification and civil or criminal penalties. FMCSA may disqualify a driver for up to 60 days and impose fines.
The New Mexico CDL general knowledge test has 50 questions, and you need 80% to pass — at least 40 correct answers. The practice tests on this page use the same format. The 80% passing score is a federal FMCSA standard used by every state.
80%. You can miss at most 10 of the 50 questions. The readiness dashboard on this page tracks whether you're consistently scoring above that bar.
In New Mexico, driver licensing is handled by the Motor Vehicle Division (MVD), so you'll often see the exam called the MVD CDL general knowledge test. The practice tests on this page match the official MVD knowledge exam format.
Yes. Every practice test on this page and everything in the DMVPrep iPhone app is free — no ads, no paywall, no account.
Federal motor carrier safety regulations (FMCSA) — the same rules every state's CDL exam is drawn from. Every question in the DMVPrep app cites the regulation or handbook section it comes from.
Yes — the DMVPrep app includes all 3,745+ questions in Spanish, and the whole app works in Spanish.