Montana CDL Combination Test (MT) 2026

4.8 out of 5 (43 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you ready to get your Commercial Driver's License (CDL) for combination vehicles in Montana? Our Montana permit test practice is designed to help you achieve just that. With a variety of multiple-choice questions covering crucial topics like coupling and uncoupling, pre-trip inspections, driving techniques, backing and maneuvering, and air brake systems, our Montana combination CDL practice test is your go-to resource for comprehensive preparation. Each driving test practice consists of 20 questions, and you'll need to answer at least 16 correctly to pass. One of the key aspects of the Montana practice permit test is understanding the increased stopping distances required for combination vehicles due to their greater weight. This is critical for maintaining safety on the road, ensuring you can handle the unique challenges presented by these larger, heavier vehicles. The DMV practice test format mirrors the actual written permit test, using multiple-choice and true-or-false questions. This helps you practice eliminating incorrect answers and honing in on the right ones, an essential skill for test day. What sets our Montana combination CDL practice test apart is the ability to take it multiple times. This means you can practice as many times as needed to feel comfortable with the questions before moving on to the next CDL practice test. Our extensive pool of permit test questions and answers provides ample opportunity for learning, ensuring you're thoroughly prepared for the DMV written test. Taking our MT CDL combination test will not only help you pass but also build your confidence as a future commercial driver. With each attempt, you'll gain a deeper understanding of the material and improve your test-taking skills. Whether you're focusing on the intricacies of coupling and uncoupling or mastering the pre-trip inspections, our combination vehicle test is here to support your journey to success. So, dive into our Montana driver's license practice test today and take the first step towards earning your CDL combination endorsement. The road to becoming a skilled and knowledgeable commercial driver starts here, with the right preparation and dedication.
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Sample Montana Combination Test Questions

Question 1

After properly coupling a tractor and semitrailer, what gap should remain between the upper and lower fifth wheel?

  1. A One to two inches
  2. B Two to five inches
  3. C At least five inches
  4. D No visible gap

Correct answer: D – No visible gap

Montana’s coupling procedure requires no space between the upper and lower fifth wheel. A visible gap may indicate that the kingpin is sitting on top of the closed jaws, creating a serious risk that the trailer will separate. The driver must also verify that the jaws surround the kingpin shank, the locking lever is locked, and the safety latch is engaged.

Source: Montana Commercial Driver License Manual 2026 — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 2

When standard color coding is used, what colors identify the emergency and service air lines, respectively?

  1. A Black and yellow
  2. B Blue and red
  3. C Red and blue
  4. D The colors always depend on the trailer

Correct answer: C – Red and blue

The emergency line is commonly coded red, while the service line is blue. The emergency line, also called the supply line, supplies the trailer tanks and controls the trailer emergency brakes. The Montana CDL manual describes this color coding as a way to prevent the two lines from being confused.

Source: Montana Commercial Driver License Manual 2026 — § 6.2.4, “Trailer Air-lines”

Question 3

Which action can damage a semitrailer’s landing gear during uncoupling?

  1. A Keeping the tractor directly in line with the trailer
  2. B Centering the kingpin over the fifth wheel
  3. C Pulling the tractor out at an angle
  4. D Checking the trailer-support surface

Correct answer: C – Pulling the tractor out at an angle

The tractor should be lined up with the trailer before it is pulled out during uncoupling. Pulling away at an angle places sideways force on the landing gear and can damage it. Proper alignment also helps the tractor clear the trailer in a controlled, straight path.

Source: Montana Commercial Driver License Manual 2026 — § 6.4.2, “Uncoupling Tractor-Semitrailers”

Question 4

Compared with an empty rig, how much more likely is a fully loaded rig to roll over in a crash?

  1. A Two times as likely
  2. B Three times as likely
  3. C Five times as likely
  4. D Ten times as likely

Correct answer: D – Ten times as likely

The Montana CDL manual states that fully loaded rigs are ten times more likely to roll over in a crash than empty rigs. Adding cargo can raise the vehicle’s center of gravity, making it easier to overturn. Cargo should be kept low, centered, and evenly distributed, and the driver should slow down before turns.

Source: Montana Commercial Driver License Manual 2026 — § 6.1.1, “Rollover Risks”

Question 5

Rearward amplification contributes to the crack-the-whip effect in a combination vehicle.

  1. A True
  2. B False

Correct answer: A – True

Rearward amplification causes the crack-the-whip effect in combination vehicles. During a quick lane change, movement becomes more severe toward the rear of the combination, increasing the risk that a trailer will overturn. Gentle, smooth steering helps prevent the sudden movements that produce this effect.

Source: Montana Commercial Driver License Manual 2026 — § 6.1.2, “Steer Gently”

Question 6

Which condition can cause a trailer to become stuck on a raised railroad-highway crossing?

  1. A High underbody clearance
  2. B A low-slung trailer or landing gear that is not fully raised
  3. C A lightly loaded cargo compartment
  4. D A short wheelbase

Correct answer: B – A low-slung trailer or landing gear that is not fully raised

The Montana manual warns that low-slung trailers can become stuck on raised railroad-highway crossings. Landing gear left only partly raised may also catch on railroad tracks or other objects. Before travel, the driver should fully raise the landing gear and account for the trailer’s underbody clearance.

Source: Montana Commercial Driver License Manual 2026 — §§ 6.1.4 and 6.4.1, “Railroad-highway Crossings” and “Coupling Tractor-Semitrailers”

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