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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Oklahoma CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Oklahoma CDL Manual. Take this practice test now to prepare for the actual OK CDL combination test!
1.
When uncoupling a trailer, after shutting off the trailer air supply to lock the trailer brakes, you should:
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pull the tractor forward until the fifth-wheel comes out from under the trailer.
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back up gently to ease the pressure on the fifth-wheel locking jaws.
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inspect the trailer supports.
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2.
As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
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the service line valve close.
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a mechanical vibration.
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air escaping from the open valve.
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3.
If you must drive slowly, how should you alert following drivers?
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Turn on your taillights
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Flash your brake lights
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Use your emergency flashers if it is legal
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4.
What is countersteering?
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Turning the steering wheel quickly the other way after steering in an emergency situation.
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Staying off the brake while steering to the right to avoid an accident.
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Locking your wheels while turning in an emergency situation.
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5.
Most truck driver deaths in crashes result from:
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truck rollovers.
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driving side-by-side with another truck.
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off-tracking.
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6.
Most hydraulic brake failures occur for one of two reasons, one of which is:
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loss of hydraulic pressure.
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relying too much on the engine braking effect.
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excessive downshifting.
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7.
While driving, you should use your mirrors to:
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check where the rear of your vehicle is while you make turns.
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know where other vehicles are around you.
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All of the above.
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8.
Dollies with ABS are required to have a malfunction lamp:
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on the left side.
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on the rear.
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on the right side.
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9.
The proper following distance for a 60-foot vehicle traveling at 50 mph is:
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6 seconds
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7 seconds
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4 seconds
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10.
Weight that is loaded so there is a high center of gravity:
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makes a vehicle easier to handle.
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reduces the chance that the load will shift to the side or fall off.
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causes greater chance of rollover.
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Frequently Asked Questions
Teen drivers in Oklahoma must follow the Graduated Driver License (GDL) program to obtain a class D driver license. Below are the specific age requirements for each phase of the GDL:
- Student driver (no license) ? you must be at least 15 years old and enrolled in a state-certified Driver Education course.
- Learner permit ? you must be at least 15 ½ years old if you have taken driver education, or 16 years old if you have not taken driver education.
- Intermediate license ? you must be at least 16 years old and hold a permit for at least 6 months.
- Unrestricted license ? you must be at least 16 ½ years old and have held an intermediate license for at least 6 months (if you have taken driver education) or be at least 16 ½ and have held an intermediate license for at least 1 year (if you have not taken driver education), or be 18 years old.
You can schedule an appointment online for the DMV written test at an Oklahoma licensing office. Simply choose the most convenient office, select your preferred date and time, and secure your spot. If your chosen office is currently full, you can check the estimated wait time and join the waitlist.
Ensure you have the following documents:
- Proof of Primary ID and additional documents if your name has changed.
- Proof of Social Security Number.
- Legal presence proof (if you are not a US citizen).
- Notarized Parent Authorization Form (for individuals under 18 without a parent or legal guardian present with them).
- Enrollment Contract or Completion Certificate (for those under 16 enrolled in a driver education course. If you are over 16 and have completed a driver education course, provide proof to waive the written test).
- Parent-Taught Affidavit approval number and proof of purchase from the Parent-Taught Program provider (for individuals under 16 opting for this driver education program).
Unlike many states, there are no alternative language options provided for the DMV written test in Oklahoma. The exam is currently available exclusively in English.
To prepare for the DMV written test, read the Oklahoma Driver's Handbook. Pay attention to road signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Verify your knowledge with our practice tests or sign up for Premium, which offers extra resources to get ready for your exam.
The DMV written test has 20 questions. The questions cover different topics about driving, such as road signs, safe driving practices, and traffic laws. Carefully study the manual to enhance your chances of passing the exam.
For new drivers in Oklahoma, here are the driving restrictions based on the GDL program:
- Student Driver (No License) ? you can drive only when accompanied by a Certified Driver Education Instructor or a Public School Instructor.
- Learner Permit ? you may drive only from 5:00 a.m. to 10:00 p.m., and you must be accompanied by a licensed driver at least 21 years old.
- Intermediate License ? you may drive alone from 5:00 a.m. to 10:00 p.m. These hour restrictions do not apply for work, religious, or school activities, or if you are under the supervision of a licensed driver at least 21 years old seated near you. Additionally, you can transport only one passenger (except for family members) unless a licensed driver at least 21 is seated in the front seat.
If you don't pass your DMV written test, you need to wait at least one day before retaking it. You must pay an added fee. Review the manual once again and concentrate on areas where you may need additional preparation to improve your knowledge for the next attempt.