Free, full Nevada 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.
Falsifying a logbook or electronic logging device (ELD) record is:
C. A serious violation that can lead to fines and being placed out of service — False duty records are illegal; they can bring fines, out-of-service orders, and disqualification, and they hide dangerous fatigue.
During the in-cab inspection, you should check that:
A. Gauges, warning lights, horn, wipers, and mirrors all function properly — Confirming gauges, lights, horn, wipers, and mirrors work ensures you can monitor the vehicle and be seen and heard while driving.
How close to a rail can you stop when approaching a railroad crossing?
C. 15-50 feet — Stop between 15 and 50 feet from the nearest rail. This keeps you off the tracks but close enough to see trains approaching.
CDL safety scenario 7: When driving a bus, when should riders be counted?
B. After each stop where passengers board or leave — After each stop where passengers board or leave. 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.
Retarders help slow the vehicle, but they:
B. Can cause the drive wheels to skid when traction is poor — Retarders can cause drive wheels to skid when traction is reduced (wet, icy, or snowy conditions). Turn them off in poor conditions.
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.
According to federal regulations, you must inspect your cargo within the first ____ miles of your trip.
C. 25 miles — You must check your cargo and securing devices within the first 25 miles of starting your trip, then every 150 miles or 3 hours thereafter.
What is the most common cause of large truck crashes according to FMCSA data?
B. Driver error, including inattention, fatigue, and following too closely — FMCSA studies consistently show that driver error is the most common factor in large truck crashes, with recognition errors (inattention), decision errors (speeding, following too close), and fatigue as leading causes.
Standees on a bus may be allowed only when:
B. There is a legal standee line marked on the floor and the bus is not on a highway — Standees are only allowed behind a standee line marked on the floor (typically behind the front axle). Standing passengers are generally not allowed when the bus is operating on a highway.
When approaching a railroad crossing with a bus, you must stop:
A. Always, between 15 and 50 feet from the nearest rail — Buses must stop at ALL railroad crossings between 15 and 50 feet from the nearest rail, look, listen, then cross when safe.
The Nevada 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.
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.