Oklahoma General Knowledge Test
From I-35 construction zones to ice storms on I-44, this test covers what Oklahoma drivers actually face.
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This is the Oklahoma CDL General Knowledge practice test. 50 questions, 80% to pass, same as the real DMV test.
Key Topics
- •Vehicle inspection
- •Basic control and shifting
- •Air brakes
About the Oklahoma General Knowledge Test
Topics Covered
- ✓Vehicle inspection — Oklahoma's extreme heat and cold can mess with tire pressure and fluid levels. You'll need to check everything before a haul.
- ✓Basic control and shifting — Crosswinds on I-40 near Weatherford push your rig sideways. You need to know how to steer and shift through it.
- ✓Air brakes — Ice buildup on brake lines is a real winter problem in Oklahoma. The test covers proper draining and anti-freeze procedures.
- + 3 more topics
📘 Study Tips & State Info
Oklahoma DPS examiners care a lot about the pre-trip inspection. They'll ask you to walk around your truck and point out what you're checking. In the written test, expect detailed questions about air brake components and coupling procedures. Don't just memorize the steps — understand why you're doing each one. For example, why do you drain air tanks? Because Oklahoma's humidity can freeze in the lines overnight.
Another thing: Oklahoma has a ton of railroad crossings, especially in the rural parts. The test will ask about when to stop, how far from the tracks, and what to do if your vehicle stalls on the crossing. The handbook has a specific section on this. Study it. Also, watch for questions about emergency vehicles — Oklahoma law requires you to move over or slow down.
Finally, use the practice tests here to get used to the timing. 50 questions in 60 minutes is plenty of time, but you don't want to rush. Take it slow, eliminate wrong answers, and trust the manual. If you're scoring 85% or higher on our practice tests, you'll pass the real one.
Oklahoma DPS handles all CDL written testing. You'll need to make an appointment at a DPS office. Walk-ins are rarely accepted. The fee for the General Knowledge test is $40, payable by cash or card at most locations. You also need to bring your Medical Examiner's Certificate and proof of identity (two forms).
Testing is available in English and Spanish. Some offices offer other languages by request, but call ahead. The test is computer-based at all major DPS offices. You get your score immediately. If you fail, you can retake it the next business day — no waiting period.
For the skills test, Oklahoma allows third-party examiners. But the written test is always through DPS. The handbook is free online at dps.ok.gov. Print it or read it on your phone. Our practice tests follow the same format and question style as the real thing.
About the Oklahoma General Knowledge Test
The Oklahoma General Knowledge test is the first written exam every CDL applicant takes. Pass this, and you're on your way to a Class A, B, or C license. The Oklahoma Department of Public Safety (DPS) administers it at offices across the state — Oklahoma City, Tulsa, Lawton, and more. You'll need to schedule an appointment, so don't just show up.
Oklahoma roads aren't like anywhere else. You've got I-40 cutting through the panhandle with crosswinds that'll shove a trailer into the next lane. You've got ice storms on I-44 that turn bridges into skating rinks. And you've got oil field trucks on rural highways that don't always signal. This test makes sure you know how to handle all of it.
The test covers five main areas: vehicle inspection, basic control and shifting, air brakes, hazard awareness, and emergency procedures. Oklahoma adds its own flavor — expect questions about load securement for heavy equipment and how to react to sudden dust storms. The DPS follows federal standards, but they tailor the examples to what you'll actually see here.
You get 60 minutes for 50 multiple-choice questions. You need 40 correct to pass — that's 80%. The real test feels exactly like our practice exams. No tricks, just the stuff you need to know to stay safe on Oklahoma's roads.
Topics Covered
Study Tips
Oklahoma DPS examiners care a lot about the pre-trip inspection. They'll ask you to walk around your truck and point out what you're checking. In the written test, expect detailed questions about air brake components and coupling procedures. Don't just memorize the steps — understand why you're doing each one. For example, why do you drain air tanks? Because Oklahoma's humidity can freeze in the lines overnight.
Another thing: Oklahoma has a ton of railroad crossings, especially in the rural parts. The test will ask about when to stop, how far from the tracks, and what to do if your vehicle stalls on the crossing. The handbook has a specific section on this. Study it. Also, watch for questions about emergency vehicles — Oklahoma law requires you to move over or slow down.
Finally, use the practice tests here to get used to the timing. 50 questions in 60 minutes is plenty of time, but you don't want to rush. Take it slow, eliminate wrong answers, and trust the manual. If you're scoring 85% or higher on our practice tests, you'll pass the real one.
Oklahoma Specific Information
Oklahoma DPS handles all CDL written testing. You'll need to make an appointment at a DPS office. Walk-ins are rarely accepted. The fee for the General Knowledge test is $40, payable by cash or card at most locations. You also need to bring your Medical Examiner's Certificate and proof of identity (two forms).
Testing is available in English and Spanish. Some offices offer other languages by request, but call ahead. The test is computer-based at all major DPS offices. You get your score immediately. If you fail, you can retake it the next business day — no waiting period.
For the skills test, Oklahoma allows third-party examiners. But the written test is always through DPS. The handbook is free online at dps.ok.gov. Print it or read it on your phone. Our practice tests follow the same format and question style as the real thing.