Indiana CDL Combination Practice Test (IN) 2

4.9 out of 5 (66 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Prepare for your Indiana CDL with our second Indiana combination CDL test, crafted to help you ace your permit test. This Indiana DMV practice test consists of 20 multiple-choice questions covering vital topics like inspection procedures, safe driving practices, air brake systems, and more. To pass, you need to answer at least 16 questions correctly, ensuring you're well-equipped for the real test. What sets this Indiana BMV practice test apart is its focus on practical, real-world scenarios that you'll encounter on Indiana's roads. From navigating the bustling streets of Indianapolis to dealing with the rural routes of southern Indiana, this practice permit test has you covered. Indiana's diverse driving conditions, from icy winters to heavy rains in the spring, demand a solid understanding of safe driving practices, and our Indiana combination vehicle test prepares you for these challenges. One key area highlighted in this Indiana permit practice test is the risk of jackknifing. This occurs when the trailer swings out of alignment with the tractor, a dangerous situation that can be avoided with smooth braking and careful handling. By practicing these skills in a controlled environment, you'll gain the confidence needed to handle your vehicle safely in any condition. Accessibility is a major feature of our CDL combination test. Available online through mobile, desktop, and mobile apps, this Indiana BMV practice test is easily accessible to all drivers license seekers, allowing you to study at your own pace and convenience. The multiple-choice and true/false format mirrors the actual written permit test, helping you practice the process of eliminating incorrect answers to find the right one. After completing the practice drivers test, you'll have the opportunity to review your answers and go over any hints and explanations for the questions you missed. This review process is crucial for reinforcing your knowledge and ensuring you're ready for the real test. Take advantage of this comprehensive Indiana combination vehicle test to enhance your CDL preparation. Whether you're facing the heavy traffic of Gary or the quiet backroads near Bloomington, our Indiana combination CDL test will ensure you're ready for any driving condition Indiana throws your way.
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Sample Indiana Combination Test Questions

Question 1

What should you do if the low-air-pressure warning activates while driving a combination vehicle?

  1. A Increase speed to help the compressor build pressure
  2. B Bring the vehicle to a safe stop and park as soon as possible
  3. C Continue until the spring brakes apply automatically
  4. D Use the trailer hand control instead of the foot brake

Correct answer: B – Bring the vehicle to a safe stop and park as soon as possible

The Indiana CDL manual instructs drivers to stop and safely park as soon as possible when the low-air warning activates. The system may have an air leak, and controlled braking is available only while sufficient tank pressure remains. Spring brakes can begin applying when pressure drops into the 20-to-45-psi range. Do not wait for automatic application.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 5.4.7, “Low Air Pressure”

Question 2

Compared with an empty rig, a fully loaded combination vehicle is about ten times as likely to roll over in a crash. True or false?

  1. A True
  2. B False

Correct answer: A – True

A fully loaded rig is about ten times more likely than an empty rig to roll over in a crash. Cargo stacked higher raises the vehicle’s center of gravity and makes it easier to overturn. Keep cargo low, centered, and properly distributed. Enter curves and ramps slowly, especially when fully loaded.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 6.1.1, “Rollover Risks”

Question 3

Why must a driver use extra caution when operating a bobtail tractor?

  1. A It cannot be steered accurately at low speeds
  2. B It can be difficult to stop smoothly and may require more stopping distance
  3. C It cannot use its service brakes without a trailer
  4. D It has a higher center of gravity than a loaded combination

Correct answer: B – It can be difficult to stop smoothly and may require more stopping distance

A bobtail is a tractor operating without a semitrailer. Tests cited in the CDL manual show that bobtails can be difficult to stop smoothly. They may take longer to stop than a tractor-semitrailer loaded to its maximum gross weight. Maintain ample following distance and look ahead far enough to brake early.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 6.1.3, “Brake Early”

Question 4

What can happen if the service and emergency air lines are crossed on an older trailer without spring brakes?

  1. A The trailer may roll, but its brakes will not operate
  2. B The foot pedal will operate only the trailer emergency brakes
  3. C The trailer hand control will apply the tractor brakes
  4. D The tractor parking brakes will release automatically

Correct answer: A – The trailer may roll, but its brakes will not operate

When the lines are crossed, supply air enters the service line instead of charging the trailer tanks. Spring brakes on a newer trailer generally will not release. An older trailer without spring brakes may still roll, but the driver may have no trailer brakes. Always verify the connections and test the trailer brakes before driving.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 6.2.5, “Hose Couplers (Glad Hands)”

Question 5

With the engine off and the service brake fully applied, how much may a combination vehicle’s air pressure drop in one minute before the leakage is excessive?

  1. A 2 psi
  2. B 2.5 psi
  3. C 3 psi
  4. D 4 psi

Correct answer: D – 4 psi

The Indiana CDL manual sets the applied-brake limit for a combination vehicle at 4 psi in one minute. Build pressure to governor cutoff, shut off the engine, release the parking brakes and tractor protection valve, and fully apply the foot brake. A drop greater than 4 psi in one minute is excessive. The leak must be repaired before driving.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 5.3.3, “Step 7 Final Air Brake Check”

Question 6

What is a likely result if a semitrailer is positioned too high during coupling?

  1. A The trailer wheels will begin rolling automatically
  2. B The glad hands cannot be connected
  3. C The electrical cord cannot reach the trailer
  4. D The fifth wheel and kingpin may not couple correctly

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

A semitrailer that is too high may not couple correctly to the fifth wheel. Proper height allows the tractor to raise the trailer slightly while backing under it. If necessary, use the landing gear to correct the height before continuing. Also confirm that the kingpin and fifth wheel are aligned.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 6.4.1, “Coupling Tractor-Semitrailers”

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