Oklahoma CDL Practice Test: General Knowledge (OK) 6

5 out of 5 (40 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Are you gearing up for the Oklahoma CDL General Knowledge Test in 2026? Our sixth CDL practice test is here to guide you through! With 50 well-crafted permit test questions, this prep test is your stepping stone to mastering the essentials for your CDL written test. It's crucial to get at least 40 questions right, but don't worry if you don't get it right the first time - every attempt gives you the same set of questions, allowing you to learn effectively. Our Oklahoma CDL practice test is an invaluable tool for 2026, reflecting the latest updates and trends in CDL requirements. We understand the diverse nature of the CDL permit test, and hence, our permit practice test is designed to cover a broad spectrum of topics. From vehicle equipment, handling road emergencies, and accident procedures, to pre-trip inspections, we've got it all. Plus, we sprinkle in some vital information about hazardous materials - it's essential knowledge for all aspiring drivers, HazMat endorsement or not. What sets our Oklahoma CDL permit practice test apart is its focus on Oklahoma-specific content. The state of Oklahoma has unique driving laws and regulations, and our DMV test is meticulously tailored to reflect these. This means you're not just preparing for a general knowledge test but are getting equipped with knowledge that's specific to Oklahoma's roads and regulations. As you dive into our Oklahoma practice permit test, you'll find a variety of questions that challenge and prepare you for the real deal. Our goal is to ensure that when you sit for your DMV permit test, you do so with confidence and a comprehensive understanding of what's required. Good luck, and remember, every question you tackle here brings you a step closer to achieving your CDL dreams in Oklahoma!
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Sample Oklahoma CDL Test Questions - General Knowledge

Question 1

When fighting an engine-compartment fire, you should raise the hood fully to reach the base of the flames.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

Turn off the engine as soon as possible, but avoid opening the hood if you can. Direct the extinguishing agent through the radiator, louvers, or from beneath the vehicle. Although extinguishers should generally be aimed at the fire’s source or base, raising the hood can allow the engine fire to spread.

Source: Oklahoma Commercial Driver’s License Manual — § 2.21.3, “Fire Fighting”

Question 2

According to the Oklahoma CDL manual, crashes involving people who drink alcohol result in approximately how many deaths each year?

  1. A Fewer than 5,000
  2. B About 10,000
  3. C More than 20,000
  4. D More than 100,000

Correct answer: C – More than 20,000

The manual states that people who drink alcohol are involved in traffic crashes resulting in more than 20,000 deaths each year. Alcohol reduces coordination, reaction time, depth perception, night vision, and judgment. These effects make drinking and driving especially dangerous when operating a large commercial vehicle.

Source: Oklahoma Commercial Driver’s License Manual — § 2.22.1, “Alcohol and Driving”

Question 3

In defensive driving, what is meant by “communicating”?

  1. A Talking on a mobile telephone
  2. B Applying the brakes repeatedly
  3. C Sounding the horn continuously
  4. D Making your intentions known to other road users

Correct answer: D – Making your intentions known to other road users

Communicating includes using signals and vehicle lights to make your intentions clear. Signal before turning or changing lanes, and warn following drivers when you need to slow. Proper communication gives other road users time to recognize and respond to your planned movement.

Source: Oklahoma Commercial Driver’s License Manual — § 2.5.1, “Signal Your Intentions”

Question 4

Which forward-scanning interval is recommended for most commercial driving?

  1. A 1–2 seconds
  2. B 5–8 seconds
  3. C 12–15 seconds
  4. D 18–21 seconds

Correct answer: C – 12–15 seconds

The Oklahoma CDL manual recommends looking at least 12 to 15 seconds ahead. This provides more time to identify entering traffic, brake lights, changing signals, and other developing hazards. Looking far ahead does not replace attention to nearby conditions; drivers should scan back and forth between near and distant areas.

Source: Oklahoma Commercial Driver’s License Manual — § 2.4.1, “How Far Ahead to Look”

Question 5

About how far ahead do low-beam headlights normally illuminate?

  1. A 250 feet
  2. B 200 feet
  3. C 150 feet
  4. D 350 feet

Correct answer: A – 250 feet

Low-beam headlights allow a driver to see about 250 feet ahead. At night, adjust speed so the vehicle’s total stopping distance remains within the illuminated area. If you drive faster than your headlights allow, you may not have enough distance to stop after seeing a hazard.

Source: Oklahoma Commercial Driver’s License Manual — § 2.11, “Vehicle Factors—Headlights”

Question 6

Which statement about tires in very hot weather is correct?

  1. A Tires should be inspected more frequently
  2. B A tire that is too hot to touch should be cooled by driving
  3. C Air should be released whenever tire pressure rises from heat
  4. D Hot weather does not affect tire safety

Correct answer: A – Tires should be inspected more frequently

During very hot weather, inspect tire mounting and pressure every two hours or every 100 miles. Do not release air merely because pressure increased with heat; the tire could be underinflated after cooling. If a tire is too hot to touch, remain stopped until it cools because it may otherwise fail or catch fire.

Source: Oklahoma Commercial Driver’s License Manual — § 2.14.1, “Vehicle Checks—Tires”

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