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Free Nevada CDL practice test online

Take a free Nevada CDL practice exam online with clear explanations—no sign-up. Coverage includes general knowledge, vehicle systems, combination vehicles, cargo, and endorsements. Then verify current requirements with Nevada Department of Motor Vehicles.

CDL knowledge tests are federally regulated, so the passing score in Nevada is the same as everywhere else: 80% correct on every knowledge test. You must also hold a commercial learner’s permit for 14 days before the skills test.

Start practice Exam-style run

New to the knowledge test? CDL endorsements explained · One-week study plan

Practice coverage
Complete a run to establish your baseline.
600questions
23topics
80%federal pass mark

49 CFR 383.135(a)(1) sets the CDL knowledge-test passing score at 80%. Reaching it here is not a prediction of your official result.

Requirements before you test

Nevada CDL test requirements

80%
Passing score
49 CFR 383.135(a)(1)
14 days
CLP held before skills test
Nevada Department of Motor Vehicles
18
Min. age (in-state)
Nevada Department of Motor Vehicles
21
Min. age (interstate)
49 CFR 391.11(b)(1)

Commercial licensing is largely federal. Any figure above credited to a 49 CFR section applies in every state — see 49 CFR 383.135(a)(1) and 49 CFR 383.25(e). A figure credited to Nevada Department of Motor Vehicles is Nevada’s own, and may be stricter than the federal floor. Test length, fees, and scheduling are set by Nevada Department of Motor Vehicles (official source).

Entry-Level Driver Training comes first

Since February 7, 2022, a new Class A or Class B CDL, a class upgrade, or a first passenger, school bus, or hazardous materials endorsement requires training from a provider on the FMCSA Training Provider Registry (49 CFR 380.600). Practice questions are study material and do not satisfy that requirement.

FMCSA Training Provider Registry

You need a Nevada licence first

A commercial learner’s permit only counts if you already hold an ordinary licence from the same state (49 CFR 383.25(a)(2)). The Nevada non-commercial knowledge test runs 25 questions and needs 20 correct, with permits issued from age 15 years, 6 months.

Nevada permit practice test
Quick practice
10 balanced questions with feedback after every answer.
Practice now
Topic review
Focus on one knowledge area before returning to mixed practice.
See topics
Exam-style run
Answer the full starter bank before seeing your results.
Take the run

What you will practice

Build coverage topic by topic.

Each question carries a topic, difficulty, explanation, and source section so your review has context.

General knowledge29 reviewed questionsMountain driving12 reviewed questionsAir brakes61 reviewed questionsCombination vehicles54 reviewed questionsVehicle systems9 reviewed questionsCargo18 reviewed questionsTank vehicles47 reviewed questionsDoubles and triples43 reviewed questionsHazardous materials71 reviewed questionsSchool bus48 reviewed questionsPassenger vehicles45 reviewed questionsSafe driving6 reviewed questionsSpace management14 reviewed questionsVehicle inspection15 reviewed questionsEmergencies23 reviewed questionsHours of service14 reviewed questionsBasic control11 reviewed questionsSeeing hazards15 reviewed questionsWeather18 reviewed questionsNight driving7 reviewed questionsDriver fitness8 reviewed questionsSpeed management17 reviewed questionsCommunication15 reviewed questions

Sample questions

5 Nevada CDL practice questions

Try these Nevada sample questions now — each shows the correct answer with a plain-language explanation and a source section. The full 600-question bank is in the practice run.

  1. 1. A front-end header board (headache rack) is meant to:

    • ASupport the fifth wheel
    • BHold warning triangles
    • CImprove aerodynamics
    • Protect the driver from cargo in a crash or emergency stop

    Answer: Protect the driver from cargo in a crash or emergency stop. The structure must be in good condition and able to block forward movement of the cargo.

    Source: Commercial Driver License Manual — Transporting cargo — header boards

  2. 2. When hauling hazardous materials, a driver must examine each tire:

    • At the beginning of each trip and each time the vehicle is parked
    • BOnly after a tire warning light
    • CEvery 500 miles
    • DOnce a week

    Answer: At the beginning of each trip and each time the vehicle is parked. Frequent checks catch a leaking or overheating tire before it can ignite near a hazardous load.

    Source: Commercial Driver License Manual — Hazardous materials — tires (49 CFR 397.17(a))

  3. 3. A collision has spilled fuel near the bus. The correct action is to:

    • AKeep students aboard with the windows closed
    • Evacuate the students well away from the bus
    • CMove the bus through the spill
    • DWait for the fuel to evaporate

    Answer: Evacuate the students well away from the bus. Spilled fuel can ignite without warning, so the passenger compartment is no longer the safest place to be.

    Source: Commercial Driver License Manual — School buses — emergency evacuation

  4. 4. The first step in correcting a drive-wheel braking skid is to:

    • Stop braking and let the wheels roll again
    • BShift into a lower gear
    • CApply the trailer hand valve
    • DApply the brakes harder

    Answer: Stop braking and let the wheels roll again. Releasing the brakes restores traction so the wheels grip. Then counter-steer quickly as the vehicle straightens.

    Source: Commercial Driver License Manual — Emergency handling — skid control

  5. 5. Liquid surge is especially important because it can:

    • AShorten every stop
    • BImprove traction
    • Push the vehicle and affect control
    • DPrevent rollovers

    Answer: Push the vehicle and affect control. Moving liquid can surge forward, backward, or sideways, changing handling and stopping behavior.

    Source: Commercial Driver License Manual — Tank vehicles — liquid surge

Practice all 600 questions

CDL knowledge areas

Classes and endorsements, organized.

Each area below scopes the reviewed question bank to one knowledge test. The material is federal, so it applies in Nevada just like everywhere else — the endorsement guide explains how the codes fit together.

General knowledge

The foundation for commercial driving: inspections, space, speed, communication, hazards, and safe operation.

  • Pre-trip inspection
  • Space and speed management
  • Railroad crossings
  • Emergency procedures
Practice general knowledge
Air brakes

Understand air-brake components, inspections, warning devices, stopping distance, and controlled braking.

  • Dual air systems
  • Low-air warnings
  • Brake lag and fade
  • Applied-leak and static checks
Practice air brakes
Combination vehicles

Prepare for safe coupling, inspection, turning, backing, and handling of tractor-trailer combinations.

  • Fifth-wheel inspection
  • Coupling and uncoupling
  • Off-tracking
  • Trailer skid prevention
Practice combination vehicles
Hazardous materialsEndorsement H

Study hazard communication, shipping papers, placards, loading rules, parking, and emergency response responsibilities.

  • Hazard classes
  • Placards and labels
  • Shipping papers
  • Loading and segregation
Practice hazardous materials
Tank vehiclesEndorsement N

Learn how liquid surge, outage, bulkheads, and high centers of gravity change vehicle handling.

  • Liquid surge
  • Outage requirements
  • Smooth braking
  • Rollover prevention
Practice tank vehicles
Doubles & triplesEndorsement T

Practice converter-dolly inspection, coupling order, rearward amplification, and stability principles.

  • Coupling sequence
  • Converter dollies
  • Rearward amplification
  • Space management
Practice doubles & triples
Passenger vehiclesEndorsement P

Prepare to inspect, load, and operate buses while keeping passengers, aisles, and exits safe.

  • Vehicle inspection
  • Passenger loading
  • Emergency exits
  • Prohibited practices
Practice passenger vehicles
School busEndorsement S

Review student loading, danger zones, mirrors, emergency procedures, and special railroad-crossing duties.

  • Danger zones
  • Student loading
  • Mirror use
  • Railroad crossings
Practice school bus
Official source hub
Verify current rules before your test.

QuizLane’s starter material points learners back to the agency responsible for licensing in Nevada. Rules and manuals can change; the official agency remains authoritative.

Visit Nevada Department of Motor Vehicles
Our accuracy promise
Original wording—not scraped competitor questions
A source section attached to every reviewed item
A correction path when something looks wrong
Read our methodology

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Common questions

What this practice can—and cannot—tell you.