Washington Pre-Trip Inspection Test

About the Washington Pre-Trip Inspection Test

The Washington CDL Pre-Trip Inspection Test is a critical part of your skills exam, administered by the Washington State Department of Licensing (DOL). You must demonstrate that you can inspect your commercial vehicle thoroughly and identify any safety issues before hitting the road. This practice test covers the same areas that examiners will check, from engine compartments to brake systems.

Washington's varied terrain—from the steep grades of Snoqualmie Pass on I-90 to the winding roads of US-2 near Stevens Pass—makes a proper pre-trip inspection essential. Your knowledge of air brake systems, coupling devices, and lighting will be tested to ensure you can handle everything from long hauls to mountain deliveries.

During the actual test, you will walk around your vehicle and explain to the examiner what you are checking and why. Common inspection points include fluid levels, belts and hoses, tire condition, brake adjustment, and emergency equipment. The examiner will also ask questions about specific components like slack adjusters and glad hands.

This free online practice test mirrors the format and content of the real Washington pre-trip inspection exam. Use it to build confidence and identify areas where you need more study. Combined with the Washington Commercial Driver Guide, you'll be ready to pass on your first attempt.

What This Test Covers

• Vehicle Inspection Overview
• Engine Compartment
• Cab Check
• Brake Systems and Air Brakes
• Lights and Reflectors
• Coupling Devices and Trailer

Study Tips

Start by downloading the Washington Commercial Driver Guide from the DOL website. Focus on the pre-trip inspection checklist in Chapter 10. Practice inspecting your own vehicle or a friend's truck, following the exact order the examiner will use. Pay special attention to air brake checks—listen for air leaks and watch the gauge for pressure drops.

Washington examiners emphasize the 3-point method: check for leaks, cracks, and loose connections on all fluid lines and hoses. For mountain driving, brakes are critical—ensure slack adjusters move correctly and that brake chambers are not damaged. Use a small mirror to check the underside of the trailer, and always carry a tire gauge to measure tread depth.

On test day, arrive early with your vehicle clean and ready. Check tire pressure, lights, and signals beforehand. Talk through each step out loud as you practice—this will help you remember the process when you're under pressure. Good luck!

Washington DMV Information

The Washington State Department of Licensing (DOL) oversees all CDL testing. You can find testing locations at DOL driver licensing offices throughout the state, including major hubs in Olympia, Seattle, Spokane, and Tacoma. The pre-trip inspection test is part of the skills exam, which also includes a basic controls test and a road test.

Fees for CDL applicants: $40 for the knowledge test, $50 for the skills test, and $10 for each endorsement (e.g., Hazmat, Tanker, Double/Triple). The CDL license itself costs $99 and is valid for 8 years. Requirements include being at least 18 for intrastate driving (21 for interstate), providing proof of Washington residency and identity, and submitting a current medical examiner's certificate if required.

You must also pass a vision screening at the time of application. For the pre-trip inspection test, you can use any commercial vehicle that meets DOL requirements—it must be representative of the class of license you are seeking. Bring your learner permit, valid ID, and the vehicle registration and insurance.

Frequently Asked Questions

Related Resources

Other Washington CDL Practice Tests

Test Details

• State: Washington
• Test: Pre-Trip Inspection Test
• Questions: 100
• Passing Score: 80%
• Time Limit: 60 minutes
• Cost: Free

Need ELDT Training?

If you're getting your first CDL, you need ELDT theory training before your skills test.