- Updated for April 2025
- Based on 2025 OR commercial driver's license manual
Free OR CDL Pre-Trip Inspection Practice Exam 2025
A pre-trip inspection helps protect you from the costly consequences of potential accidents or mechanical breakdowns while transporting cargo or passengers. You will learn about pre-trip inspections as a part of your driver’s training for a Oregon Commercial Learner’s Permit (CLP). Federal regulation 49 CFR § 396.13 requires commercial drivers to verify the operational safety of their vehicles before driving on public roads. If you’re traveling through Portland, especially during rush hour, you don’t want a smash-up or blown hose to ruin your day. A checklist of the crucial systems and components of your vehicle, such as the tires, brakes, mirrors, and engine, will ensure you complete a thorough inspection.
Before applying for a Oregon Commercial Driver’s License, you must earn a CLP, which means meeting several requirements. One of the key requirements you must meet is to pass the DMV CDL General Knowledge Test, which includes questions about pre-trip inspections. Our Oregon DMV Pre-Trip Inspection Practice Test helps you thoroughly learn the process in a simulated testing environment. The official knowledge test requires you to answer 80% of the 20 questions correctly to receive a passing score. The practice test will help you improve your test score by providing expert instruction to answer questions about this safety measure.
Our CDL Pre-Trip Inspection practice test allows you to assess your current knowledge of pre-trip inspections with reliable and authoritative information. It contains 20 multiple-choice questions, similar to those on the official knowledge test, to more effectively manage your study time. The practice test is more effective and time-efficient than any study guide because it is interactive. If you get a question wrong, the practice test will provide a detailed explanation of the correct answer. This information is taken directly from the Oregon DMV CDL driver’s manual (Oregon CDL Handbook 2025) and is up to date as of April 2025. In comparison, a study guide offers no interactive feedback on wrong answers. You will either be left to your own interpretation or forced to consult additional sources. The practice test gives you access to first-rate learning in its most convenient form.
Stop and smell the roses in Salem, and get on your way to smooth and pleasant rides with practice tests for other U.S. states and Washington D.C. at https://driving-tests.org/academy/drivers-license.
- 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 OR DMV 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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