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Oklahoma General Knowledge Test

Oklahoma's I-35, I-40, and I-44 converge in Oklahoma City — you'll need to know them cold for your CDL test.

140
Questions
80%
To Pass
60
Minutes

140 questions · 60 min time limit · 80% to pass

Opens in a practice window — choose your mode inside.

JM

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026

All questions sourced from the official Oklahoma CDL handbook and FMCSA regulations.

About the Oklahoma General Knowledge Test

Oklahoma's roads test your skills every day. You'll drive on flat plains, winding hills, and busy interstates like I-35, I-40, and I-44. Our state also brings sudden ice storms, tornado watches, and blinding fog. That means your CDL General Knowledge exam covers more than just basic rules — it prepares you for real Oklahoma conditions.

The test has 50 questions, and you need 40 correct to pass (80%). It covers air brakes, safe driving, vehicle inspections, hauling cargo, and more. Many Oklahoma truckers haul oil field equipment or agricultural goods, so expect questions about heavy loads and hazardous materials too.

Our practice test mirrors the official Oklahoma CDL exam. Every question comes straight from the state handbook. You'll see the same format, the same wording, and the same emphasis on topics that matter here. Use it to find weak spots before you go to the DPS office.

Don't waste time or money on retakes. Take our free test now, review your results, and walk into your exam with confidence. Oklahoma drivers know the terrain — now you'll know the rules.

Oklahoma's commercial driving centers on I-35 (north-south), I-40 (east-west), and I-44 (connecting Tulsa to Missouri). The state is a major oil and gas producer, and its highways carry significant petroleum and agricultural freight. Our general knowledge practice test mirrors the official Oklahoma DPS CDL written exam.

Oklahoma's terrain ranges from flat prairie in the west to the rolling hills of the Ozark Plateau in the east. The I-40 corridor through Oklahoma City and the I-35 corridor through the state carry massive freight volume. Severe weather — including tornadoes and ice storms — is a signature hazard. The exam tests weather awareness, winter driving, and defensive driving in rapidly changing conditions.

Topics Covered

✓Air Brakes – Required for most Oklahoma trucks because of heavy loads on I-40 and rural highways.
✓Safe Driving Practices – Helps you react to Oklahoma's sudden tornadoes, ice storms, and dense fog.
✓Vehicle Inspections – State law demands a pre-trip inspection; our test covers every step.
✓Combination Vehicles – Many Oklahoma hauls use tractor-trailers; we test hook-ups, braking, and rollover prevention.
✓Cargo Handling – Learn securement rules for oil field equipment and agricultural products common in Oklahoma.
✓Hazardous Materials – Know the placards and handling rules if you haul oil or chemicals through Oklahoma.

Study Tips

Start with the Oklahoma CDL Handbook – it's your only source for test questions. Our practice test covers the same material, so use it to check your understanding. Focus on air brakes and combination vehicles: about half the test relates to these topics, and they're crucial for Oklahoma's heavy truck traffic on I-35 and I-44.

Take the practice test at least three times. Review every wrong answer by looking up the handbook section. Oklahoma's DPS doesn't provide explanations, so we built ours into the results page. Pay special attention to safe driving in bad weather – it's a big part of the real exam.

Schedule your DPS appointment early. Many Oklahoma testing centers book weeks out. Don't rush; give yourself time to study consistently. A little each day beats cramming.

Oklahoma Specific Information

  • Oklahoma DPS administers the CDL General Knowledge test at most exam centers. You'll need to bring your Oklahoma driver's license, social security card, and proof of residency. The test is computer-based and you'll get your score immediately. No appointment is required for the written test, but skills tests need one – book online at dps.ok.gov.

    Fees: $25 for the Commercial Learner's Permit, plus $50 for the CDL (if you pass). Some smaller offices may only offer testing on certain days. Check the DPS website for your closest location: Oklahoma City, Tulsa, Lawton, Stillwater, and others.

    You can take the test in English or Spanish. If you fail, you can retake it after one day. There's no limit on retakes within a year, but each attempt costs $25. Use our practice test first – it's free and saves you money.

  • The Oklahoma Department of Public Safety (DPS) requires a knowledge test for all CDL classes; the general knowledge exam is the foundation for every commercial license.
  • Oklahoma's oil and gas industry generates heavy tanker traffic; hazmat endorsements are common and the exam tests placarding and emergency response.
  • Tornadoes and severe ice storms are signature hazards — the exam tests weather-related speed adjustment and following distance.
  • The I-40/I-35 interchange in Oklahoma City is a major freight crossroads; scanning and space management are critical.
  • The Ozark Plateau routes in eastern Oklahoma have rolling grades where gear selection and brake management matter.

Frequently Asked Questions

Do I need an appointment for the Oklahoma CDL knowledge test?
No, the written General Knowledge test is walk-in at most DPS exam centers. But you'll need an appointment for the skills test.
How many questions are on the Oklahoma CDL General Knowledge test?
There are 50 questions, and you need 40 correct to pass (80%). The test is multiple-choice.
Can I take the test in Spanish in Oklahoma?
Yes, the CDL knowledge test is available in Spanish at all Oklahoma DPS offices. The handbook is also available in Spanish.
What happens if I fail the General Knowledge test?
You can retake it the next day. There's no limit on retakes within one year, but each attempt costs $25.
Is the Oklahoma CDL General Knowledge test timed?
Yes, you get 60 minutes to finish 50 questions. Our practice test uses the same time limit so you can pace yourself.
JM

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026 · FMCSA-compliant content