Oklahoma CDL Manual 2026

How to use the Oklahoma CDL Manual

The Service Oklahoma draws its 20-question knowledge test from the Oklahoma CDL Manual, and you need 75% to pass, which is 15 correct answers. Read the 165 pages once for coverage, then answer practice questions to find the rules that did not stick. Practice tells you what you do not know yet; the CDL Manual is where the rule is actually stated, in the words the state chose.

It is also the only source that settles an argument. When a practice answer and your instinct disagree, the Oklahoma CDL Manual decides it, and every explanation we write points back into it.

What is inside the Oklahoma CDL Manual

The Oklahoma CDL Manual runs to 165 pages. These are the areas it covers that the knowledge test can ask about.

• Vehicle inspection and the pre-trip procedure
• Basic control of a heavy vehicle, including turning and backing
• Shifting, speed management and space management
• Seeing hazards and emergency maneuvers
• Air brakes, if your vehicle has them
• Combination vehicles, coupling and uncoupling
• Cargo loading, weight distribution and securement
• Hazardous materials rules and placarding
• Passenger transport and school bus requirements
• Hours of service, logbooks and driver qualification
• Disqualifications, serious traffic violations and testing

The Oklahoma knowledge test at a glance

Everything below comes from the Service Oklahoma directly. It is what the Oklahoma CDL Manual is preparing you for.

Questions

20

Passing score

75%

Correct answers needed

15 of 20

Time limit

60 minutes

Test fee

$42.5

Minimum age

15.5

Can you take it online?

Yes, with conditions

Verified against the Service Oklahoma in November 2026.