Nevada CDL Combination Practice Test (NV) 2

5 out of 5 (44 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As a resident of Nevada, preparing for your Commercial Driver's License (CDL) combination vehicle test is crucial to your success on the road. Our Nevada DMV permit practice test is designed to help you ace your CDL test by providing 20 multiple-choice questions that cover essential topics. These questions are derived from the official driver's manual, ensuring that you're studying the same material found on the real DMV permit test. With topics ranging from inspection procedures and safe driving practices to air brake systems, our Nevada DMV written test practice is comprehensive and reliable. What sets our Nevada DMV practice test apart is its accessibility. You can take the permit practice test online at any time that suits your schedule. Whether you're in bustling Las Vegas, navigating the Sierra Nevada, or traveling through the vast expanses of the Great Basin, this flexibility is invaluable. The practice permit test allows you to study at your own pace, away from the constraints of a driving school schedule. Our NV combination vehicle test questions are meticulously crafted and reviewed by professional driving instructors with decades of experience. These experts have guided thousands of drivers to successfully obtain their CDL licenses, ensuring that each question on the combination CDL test is relevant and challenging. By practicing with questions written by seasoned professionals, you can be confident that you're getting the best preparation possible. Unique driving conditions in Nevada, such as the steep gradients of the Sierra Nevada and the wide-open highways of the desert, present specific challenges that are addressed in our Nevada CDL combination test. Understanding how to handle these diverse environments, including the risks of jackknifing on slippery mountain roads or managing the trailer's stability on long, straight desert stretches, is crucial. Our combination CDL practice test includes scenarios that will prepare you for these real-world conditions, enhancing your confidence and competence. Prepare thoroughly and confidently for your CDL permit with our Nevada DMV permit practice test, knowing that you're using a resource based on the same manual as the actual test. Remember, achieving a passing score of at least 16 out of 20 on our combination CDL test is within your reach, ensuring you're well-equipped for the road ahead.
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Sample Nevada Combination Test Questions

Question 1

What is a likely result if a semitrailer sits too high before coupling?

  1. A The trailer will necessarily begin rolling
  2. B The air lines cannot reach the glad hands
  3. C The electrical cord cannot reach its socket
  4. D The kingpin may not couple correctly with the fifth wheel

Correct answer: D – The kingpin may not couple correctly with the fifth wheel

The trailer should be positioned low enough that the tractor lifts it slightly while backing underneath. If the trailer is too high, the kingpin may not enter and lock into the fifth wheel correctly. Adjust the landing gear before continuing and confirm that the kingpin and fifth wheel are aligned.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 2

In the standard tractor-semitrailer coupling sequence, what should be connected before the tractor backs fully under the trailer?

  1. A Nothing; lock the fifth wheel before making other connections
  2. B Only the emergency air line
  3. C Only the service air line
  4. D Both the emergency and service air lines

Correct answer: D – Both the emergency and service air lines

In Nevada's CDL coupling sequence, connect the emergency and service air lines after aligning the tractor with the trailer and checking trailer height. Support the lines where they will not be crushed or caught as the tractor backs underneath. Supply air to the trailer and allow pressure to reach normal before continuing the coupling procedure.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 3

Why should the trailer hand valve not be used to correct a jackknife caused by a trailer-wheel skid?

  1. A The trailer brakes cannot respond to the hand valve
  2. B Additional trailer braking continues the condition that caused the skid
  3. C The hand valve cannot be reached during a skid
  4. D The hand valve is the recommended way to straighten the combination

Correct answer: B – Additional trailer braking continues the condition that caused the skid

A trailer-wheel skid begins when the trailer's wheels lock and lose traction. Applying the trailer hand valve adds braking to the wheels that are already skidding and will not straighten the combination. Release the brakes to let the wheels roll and regain traction; the trailer should then begin following the tractor again.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.1.5, “Prevent Trailer Skids”

Question 4

Which combination configurations are especially likely to become stuck on a raised railroad-highway crossing?

  1. A Tank vehicles solely because they carry liquid
  2. B Any trailer displaying hazardous-material placards
  3. C Low-slung trailers and certain long trailers pulled by single-axle tractors
  4. D All of these configurations

Correct answer: C – Low-slung trailers and certain long trailers pulled by single-axle tractors

Low-slung units such as lowboys, car carriers, moving vans, and possum-belly livestock trailers can become hung up on raised crossings. Another high-risk setup is a single-axle tractor pulling a long trailer whose landing gear is positioned for a tandem-axle tractor. The common issue is insufficient underneath clearance.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.1.4, “Railroad-highway Crossings”

Question 5

What can occur if a semitrailer is positioned too low before coupling?

  1. A The kingpin will always miss the fifth wheel
  2. B The air lines will be too short to connect
  3. C The tractor may strike and damage the trailer nose
  4. D Nothing, because the trailer will automatically rise into position

Correct answer: C – The tractor may strike and damage the trailer nose

The trailer should be low enough for the tractor to lift it slightly, but not so low that the tractor cannot pass underneath. If it is set too low, the tractor may strike and damage the trailer nose. Use the landing gear to correct the height before backing under the trailer.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 6

Why should glad-hand couplers and their rubber seals be cleaned before connection?

  1. A To improve fuel economy
  2. B To reduce tire wear
  3. C To make the fifth wheel lock faster
  4. D To help prevent air from escaping at the connection

Correct answer: D – To help prevent air from escaping at the connection

Glad hands connect the tractor's service and emergency air lines to the trailer. Each coupler has a rubber seal designed to prevent air from escaping. Cleaning the couplers and seals before joining them helps the seals make a proper connection and reduces the likelihood of an air leak.

Source: Nevada Commercial Driver License Handbook (DMV 702) — § 6.2.5, “Hose Couplers (Glad Hands)”

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