Oklahoma CDL Practice Test Questions and Answers (OK) 7

4.9 out of 5 (51 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Gear up for your Commercial Driver's License (CDL) in 2026 with our comprehensive Oklahoma General Knowledge Practice Test. As your seventh test in our series, it's a pivotal step in ensuring you're well-prepared for the real deal. This CDL practice test features 50 thoughtfully crafted Oklahoma permit test questions, each designed to test your understanding of essential CDL concepts. To pass, you'll need to correctly answer at least 40 questions, demonstrating a solid grasp of the material. One of the key benefits of this Oklahoma permit practice test is its up-to-date content, reflecting the latest regulations and standards for 2026. We continually update our questions to ensure they are current, providing you with the most relevant preparation possible. This freshness in content is critical in staying ahead and being fully prepared for any changes in the CDL examination process. Another aspect that sets this Oklahoma CDL practice test apart is its approach to time management. Unlike the actual CDL test, our permit practice test is not timed. This allows you the luxury of delving deep into each Oklahoma CDL test question, understanding the nuances of road signs, traffic signals, rules of the road, and pavement markings at your own pace. It's a learning-focused approach, designed to enhance your understanding and retention of the material, without the pressure of a ticking clock. The variety of Oklahoma DMV test questions on this prep test is another highlight. We've included a wide range of questions to cover all the crucial areas that you'll encounter in the DMV written test. This breadth ensures that you're not just preparing to pass the CDL test in 2026, but also to become a knowledgeable and safe commercial driver. So, sit back, relax, and take your time to absorb the intricacies of commercial driving knowledge in 2026 with our Oklahoma CDL General Knowledge Practice Test. It's not just about passing - it's about mastering the road!
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Sample Oklahoma CDL Test Questions - General Knowledge

Question 1

If reflective triangles are used as a CMV’s required warning devices, how many must be carried?

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

Correct answer: D – 3

Federal equipment rules specify three bidirectional emergency reflective triangles when triangles are used as the required warning-device option. The CDL manual likewise lists three red reflective triangles in the emergency equipment inspection. Drivers must also know how to place warning devices properly after stopping on or near a roadway.

Source: Oklahoma Commercial Driver’s License Manual — § 2.1, “Emergency Equipment”, 49 CFR § 393.95(f) — Emergency equipment on all power units

Question 2

At 55 mph, what following interval should a driver maintain for a 30-foot vehicle under normal conditions?

  1. A 3 seconds
  2. B 4 seconds
  3. C 5 seconds
  4. D 6 seconds

Correct answer: B – 4 seconds

A 30-foot vehicle requires three seconds under the one-second-per-10-feet rule. Because 55 mph is above 40 mph, add one more second, giving a four-second following interval. Slippery roads and other adverse conditions require substantially more space.

Source: Oklahoma Commercial Driver’s License Manual — § 2.7.1, “How Much Space?”

Question 3

Why must you select a low gear before beginning a downgrade?

  1. A It allows you to concentrate only on the brake pedal
  2. B Once speed builds, you may be unable to downshift and could lose engine braking
  3. C It allows the vehicle to maintain the highest legal speed
  4. D It prevents all possible transmission wear

Correct answer: B – Once speed builds, you may be unable to downshift and could lose engine braking

Select the proper low gear before starting down the grade. If speed has already increased, you may be unable to shift into a lower gear or even return to any gear. Losing the transmission gear also removes the engine-braking effect needed to help control speed and protect the service brakes from excessive heat.

Source: Oklahoma Commercial Driver’s License Manual — § 2.16.2, “Select the Right Gear before Starting Down the Grade”

Question 4

In which two situations should a driver downshift before beginning the maneuver?

  1. A Before stopping and after leaving a curve
  2. B Before starting from rest and while climbing a hill
  3. C Before shutting off the engine and before leaving the cab
  4. D Before starting down a hill and before entering a curve

Correct answer: D – Before starting down a hill and before entering a curve

Downshift before beginning a downgrade to obtain engine braking and reduce the risk of overheating the service brakes. Also slow and select the proper gear before entering a curve. Using some power through the curve helps maintain vehicle stability and allows smooth acceleration after leaving it.

Source: Oklahoma Commercial Driver’s License Manual — § 2.3.1, “Special Conditions Where You Should Downshift”

Question 5

Which statement correctly describes a commercial vehicle’s overhead clearance?

  1. A Posted clearance heights are guaranteed to remain accurate
  2. B The vehicle’s height may change with the weight of its cargo
  3. C Driving near the shoulder increases clearance when the roadway tilts
  4. D A vehicle that cleared an overpass while loaded will always clear it when empty

Correct answer: B – The vehicle’s height may change with the weight of its cargo

Cargo weight can affect a vehicle’s height because the suspension compresses under a load. An empty cargo van may sit higher than the same van when loaded. The Oklahoma CDL manual also warns that repaving or packed snow can reduce the actual clearance beneath an overpass. Verify that adequate overhead space is available before proceeding.

Source: Oklahoma CDL Driver’s Manual — § 2.7.4, “Space Overhead”

Question 6

What should you do before steering a commercial vehicle into a curve?

  1. A Reduce speed and select a suitable gear
  2. B Shift to a higher gear and accelerate
  3. C Stop at the entrance to every curve

Correct answer: A – Reduce speed and select a suitable gear

Enter a curve at a speed that allows you to maintain control without heavy braking. Braking in the curve can lock the wheels and cause a skid, while excessive speed can lead to a rollover. Select a gear that permits slight acceleration through the curve, and never exceed the posted advisory or speed limit.

Source: Oklahoma CDL Driver’s Manual — § 2.6.3, “Speed and Curves”

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