- Updated for April 2025
- Based on 2025 OK commercial driver's license manual
Free OK CDL Pre-Trip Inspection Practice Exam 2025
Federal regulation 49 CFR § 396.13 requires commercial drivers to complete a pre-trip inspection to verify the safety of their vehicles before driving them on public roads. By using a checklist to verify the safety of the vehicles, commercial drivers can confirm the safety-critical systems and components of their vehicle, such as the brakes, taillights, windshield, and tires, meet safety standards. A thorough pre-trip inspection may prevent accidents and untimely mechanical malfunctions, saving lives, protecting cargo, and avoiding lost work time. The Turner Turnpike is not a place you want to have a costly mishap. Considering the potential consequences, it would be wise for you to take a deep dive into the pre-trip inspection process before applying for your Oklahoma Commercial Learner’s Permit (CLP).
Before you may apply for a Oklahoma Commercial Driver’s License (CDL), you need to develop your driving skills and habits, including pre-trip inspections, with a CLP. While there are a few additional requirements to obtain a CLP, one of the major ones is passing the SOK CDL General Knowledge Test. You can expect to see numerous questions about pre-trip inspections on the official knowledge test. To earn a passing grade on the official knowledge test, you must answer 80% of the 20 questions correctly. Your understanding of pre-trip inspections will help pave the way for you to pass the official knowledge test. Our Oklahoma SOK Pre-Trip Inspection Practice Test will teach you the details of this safety measure in a simulated testing environment.
While you may find other on-line resources, such as study guides, this CDL Pre-Trip Inspection Practice Test provides the most comprehensive and authoritative information for conducting the process. The practice is interactive and provides you with feedback to fill your knowledge gaps. It helps you establish a solid knowledge base on which to build your driving skills. While study guides teach you to memorize the answers to the questions, the practice test contains 20 multiple-choice questions to assess your knowledge of pre-trip inspections. If you submit an incorrect answer, the practice test will provide you with a detailed explanation of the correct one. You can rely on this information because it is based on the most recent Oklahoma SOK CDL driver’s manual (Oklahoma CDL Handbook 2025) and up to date as of April 2025. Pre-trip inspections are too important for you to settle for anything less than a resource that increases your knowledge and confidence in performing them. The practice test will get you started toward safe travels.
Ada may be the Queen City of the Chickasaw Nation, but you can rule the road with practice tests for other U.S. states and Washington D.C. at https://driving-tests.rg/academy/drivers-license.
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- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual OK SOK exam
questions
correct answers to pass
passing score
List of questions (classic view)
- What structure supporting the fifth wheel skid plate should be checked for cracks or breaks?
- You pump the pedal three times and hold it down for five seconds, making sure that the pedal does not move. What are you inspecting?
- What transmits power from the transmission to the drive axle?
- What carries air or hydraulic fluid to the wheel brake assembly?
- ________ are gas or hydraulic devices that cushion the vehicle's ride and stabilize the vehicle.
- What is the sliding mechanism and locking device for tandem axles on trailers?
- What do you inspect to make sure that all are present and show no signs of looseness such as rust trails or shiny threads?
- What should you check to be sure it is solid, clear of objects, and securely bolted to the tractor frame?
- What maintains air pressure in the air brake system?
- Which tires should have a minimum tread depth of 4/32 inch?
- Which of the following can disengage the engine from the drivetrain?
- What transforms steering column action into wheel action?
- Make sure that the _________ are not cut, chafed, spliced, or worn, and not tangled, pinched, or dragged against tractor parts.
- You are looking for puddles on the ground and dripping fluids on the underside of the engine and transmission. What are you checking for?
- What should be fully engaged with no loose or missing pins in the slide mechanism of the sliding fifth wheel?
- To improve visibility during severe or stormy weather, __________ must be secure, undamaged, and operating smoothly and correctly.
- _________ should be clean with no dirt, illegal stickers, obstructions, or damage.
- _________ are the brackets, bolts, or bushings that are used to attach the spring or air bag to the axle and vehicle frame.
- If the wheel has a sight glass, check that the oil level is adequate. Otherwise, look for leaks around the
- What releases the fifth wheel locking jaws so the trailer can be coupled?
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