Tennessee CDL Practice Test (TN) 2026

4.9 out of 5 (110 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Get ready to elevate your driving knowledge with our Tennessee CDL Practice Test, your initial step towards mastering the essentials of commercial driving in 2026. This DMV practice test, designed for Tennessee's aspiring commercial drivers, offers a comprehensive set of 20 driving test questions and answers that encapsulate vital aspects of driving knowledge necessary for both Class A and Class B license applicants. With a requirement to answer at least 16 DMV questions correctly, this CDL practice test is crafted to build your confidence and expertise in key areas such as vehicle inspection, vehicle control, gear shifting, and more. As you navigate through this Tennessee CDL practice test, you'll encounter multiple-choice questions that mirror the real DMV test, complete with authentic TN permit test answers and study aids to assist you through challenging questions. Whether it's understanding how to communicate effectively on the road, managing speed, or gaining awareness about drug and alcohol regulations, this DMV permit practice test is your ally. Remember, while this test is a robust tool to enhance your learning, it's part of a bigger preparation strategy. It complements, but does not replace, the mandatory drivers education courses required in Tennessee (commercial driver's license applicants may know these courses as Entry Level Driver Training, or ELDT). Integrating this TN DMV practice permit test with your drivers ed helps cement your knowledge, ensuring you're not just prepared but poised for success when you face the actual DMV permit test in 2026. Expanding on your preparation, this Tennessee CDL practice test serves as a crucial step in familiarizing yourself with the format and type of driving test questions you'll encounter. It's designed not just to test your knowledge, but to reinforce the learning and understanding of Tennessee's specific driving laws and operational best practices. By consistently practicing, you'll gain a deeper insight into the areas where you excel and those that might require more focus. Additionally, the practice test offers a unique opportunity to experience the pressure and environment similar to the actual TN CDL permit test in 2026. This familiarity can significantly reduce test-day anxiety, allowing you to demonstrate your knowledge confidently and efficiently. Engage with this CDL permit practice test as part of your comprehensive study plan, and you'll find yourself well-equipped to navigate the challenges of the Tennessee DMV CDL permit test, securing your path towards a successful and safe commercial driving career!
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Sample Tennessee CDL Test Questions - General Knowledge

Question 1

Once a hazard has been perceived, about how long does the average driver take to physically begin braking?

  1. A. ¼ to ½ second
  2. B. ¾ to 1 second
  3. C. 1½ to 2 seconds
  4. D. 2 to 3 seconds

Correct answer: B. – ¾ to 1 second

The Tennessee CDL manual gives an average reaction time of ¾ to 1 second under ideal conditions. During this interval, the vehicle continues moving before the driver physically applies the brakes. Reaction distance is separate from perception distance and braking distance, although all three contribute to total stopping distance.

Source: Tennessee Commercial Driver’s License Manual — § 2.6.1, “Stopping Distance”

Question 2

An unblocked cargo article is 8 feet long. What is the minimum number of tiedowns required?

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

Correct answer: B. – 2

Federal cargo-securement rules require at least two tiedowns for an unblocked article that is longer than 5 feet but no longer than 10 feet, regardless of its weight. An 8-foot article falls within that range. Different minimums may apply when cargo is shorter, heavier, longer, or blocked against forward movement.

Source: 49 CFR § 393.110(b)(2)(ii) – Additional requirements for determining the minimum number of tiedowns

Question 3

When baggage or freight is carried on a passenger bus, how must it be secured?

  1. A. So the driver can move freely and operate the bus
  2. B. So emergency doors and windows remain usable
  3. C. So shifting or falling items cannot injure riders
  4. D. All of these requirements must be met

Correct answer: D. – All of these requirements must be met

Bus baggage and freight must be secured without restricting the driver’s movement. Riders must remain able to use any emergency door or window, and carry-on items must not be allowed to fall or shift onto passengers. Doorways and aisles also must be kept clear of baggage that could block or trip riders.

Source: Tennessee Commercial Driver’s License Manual — § 4.2, “Loading and Trip Start”

Question 4

Which commercial vehicles are among those required to stop before crossing railroad tracks?

  1. A. Every commercial vehicle, without exception
  2. B. A bus carrying passengers or a CMV carrying a listed placarded hazardous material
  3. C. Only commercial vehicles traveling at night
  4. D. Only commercial vehicles at unmarked crossings

Correct answer: B. – A bus carrying passengers or a CMV carrying a listed placarded hazardous material

Federal rules require every bus transporting passengers and CMVs carrying specified hazardous materials to stop 15 to 50 feet from the tracks, unless a listed exception applies. Certain cargo tank vehicles are also covered. After stopping, the driver must look and listen for trains and cross in a gear that does not require shifting on the tracks.

Source: Tennessee Commercial Driver’s License Manual — § 4.3.5, “Railroad-highway Crossing/Stops”, Tennessee Commercial Driver’s License Manual — § 9.6.12, “Stop before Railroad Crossings”, 49 CFR § 392.10(a), (b) – Railroad grade crossings; stopping required

Question 5

Using the wet-road guideline, approximately how fast should you travel when the posted limit is 55 mph?

  1. A. 45 mph
  2. B. 55 mph
  3. C. 35 mph
  4. D. 25 mph

Correct answer: C. – 35 mph

The Tennessee CDL manual advises reducing speed by about one-third on a wet road, giving 55 mph to about 35 mph as its example. Wet pavement can double stopping distance and makes turning without skidding more difficult. Actual conditions may require an even lower speed to maintain control.

Source: Tennessee Commercial Driver’s License Manual — § 2.6.2, “Matching Speed to the Road Surface”

Question 6

Which statement correctly compares common alcoholic drinks?

  1. A. A 12-ounce beer does not affect driving ability
  2. B. A 12-ounce 5% beer contains about as much alcohol as a 1½-ounce shot of 80-proof liquor
  3. C. Coffee quickly removes alcohol from the body
  4. D. Drinking rapidly produces a lower blood alcohol concentration

Correct answer: B. – A 12-ounce 5% beer contains about as much alcohol as a 1½-ounce shot of 80-proof liquor

A 12-ounce 5% beer, a 5-ounce glass of 12% wine, and a 1½-ounce shot of 80-proof liquor contain approximately the same amount of alcohol. It is the alcohol itself that impairs performance, regardless of the beverage. Drinking faster raises the amount of alcohol in the body, and only time sobers a person.

Source: Tennessee Commercial Driver’s License Manual — § 2.22.1, “What Is a Drink?”

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