Seattle Knowledge Test: How to Study, Schedule, and Pass

To pass the Seattle knowledge test, study the Washington Driver Guide, pre-apply online to get a Washington Driver License (WDL) number, then schedule the 40-question computer exam at an approved third-party testing location in the Seattle area and answer at least 32 questions correctly.

What the Test Covers

Every question is drawn from the Washington Driver Guide. The exam checks two things: whether you can read highway signs and whether you know Washington traffic laws.¹ In practice, that means right-of-way at intersections, the meaning of road signs and pavement markings, speed limits in school and construction zones, and when to yield to pedestrians and emergency vehicles.

A significant portion focuses on impaired and distracted driving. Expect questions about how alcohol and marijuana affect reaction time, Washington’s legal blood-alcohol limits, and penalties for driving under the influence. Headlight rules and school-bus stopping laws come up frequently. The questions aren’t tricky, but the answer choices are often close, and casual readers of the guide tend to miss the specific legal thresholds.

Passing Score and Format

The test has 40 multiple-choice questions, and you need at least 32 correct to pass — an 80 percent threshold that leaves room for eight wrong answers.² You take it on a computer, one question at a time, and get your result as soon as you finish. A passing score is transmitted electronically to the Department of Licensing and stays valid for two years.

How to Study

The Washington Driver Guide is free and is your primary study material. The DOL publishes it as a downloadable PDF in 14 languages, with a text-only HTML version and a plain-text PDF for accessibility.³ Once you’ve worked through it, use the DOL’s free five-question practice test to check where you stand.

Give extra attention to the sections on alcohol and marijuana, headlights, distracted driving, and school-bus rules. Those topics come up repeatedly, and the specific numbers (blood-alcohol levels, following distances) are what people miss when they study casually.

Before You Can Schedule

You need a Washington Driver License number before you can book a test. Create a License eXpress account on the DOL website and pre-apply online.⁴ The system generates a unique 12-digit WDL number that starts with “WDL” and acts as your identifier for all testing and licensing activity.⁵ Write it down or print it. You’ll need it to book your appointment and to check in on test day.

During pre-application, you’ll provide your full legal name, date of birth, and Social Security number if you have one.⁶ Applicants without a Social Security number can still proceed by providing alternative identity documents. When you later visit a DOL office to finalize your permit or license, you’ll need physical proof of identity and Washington residency, so check the DOL’s identity documents page before your office visit.

Where to Schedule in Seattle

Knowledge testing in the Seattle area happens at approved third-party driving schools, not at DOL offices. Use the DOL’s online lookup tool to find locations by city and service type.⁷ Book directly through the testing location’s website or by phone.

Each location sets its own fee, so the price varies. The DOL does not publish a standard amount, so confirm the cost with your specific location.⁸ This testing fee is separate from the $35 instruction permit application fee you’ll pay the DOL afterward.⁹

Languages Offered

The test itself is offered in 12 languages: English, Spanish, Traditional Chinese, Simplified Chinese, Korean, Russian, Vietnamese, Japanese, Arabic, Punjabi, Tagalog, and Ukrainian.² Not every testing location offers every language, so confirm availability when you schedule.

Disability Accommodations

The DOL provides accommodations including a minimum-distraction testing environment and headphones or audio-assistive devices.¹⁰ Contact the DOL or your testing location in advance to arrange what you need.

After You Pass

Your passing score goes to the DOL electronically and stays valid for two years.² Once it’s on file, you can apply for an instruction permit. Washington issues permits to applicants who are at least 15 and a half and have passed the knowledge test, or who are at least 15 and enrolled in an approved driver training course.⁹ The permit application fee is $35 as of January 2026.

With your permit, you can practice on public roads under specific conditions: carry your valid permit, drive with a licensed driver who has at least five years of driving experience, and do not use a phone or mobile device while driving, except to call 911.⁵

If You Don’t Pass

Failing isn’t the end of the process. The DOL notes there may be a waiting period before you can retest but doesn’t specify a standard number of days.² Check with your testing location for its retake policy, and expect to pay the testing fee again for each attempt.

Before you rebook, go back to the sections of the Driver Guide where you were weakest, run through the DOL practice test, and make sure you understand why the correct answer is correct instead of memorizing it. The questions come straight from the guide, so targeted review pays off more than another general read.

1
Washington State Legislature. RCW 46.20.130 – Examination of Applicant for Drivers License
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Washington State Department of Licensing. Do I Need to Take a Test?
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Washington State Department of Licensing. Driver Guides
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Washington State Department of Licensing. Pre-Apply Online
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Washington State Department of Licensing. Get Your Learner Permit
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Washington State Department of Licensing. Documents for Proof of Identity
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Washington State Department of Licensing. Driver Training Schools and Testing Locations
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Washington State Department of Licensing. Driver Licensing Fees
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Washington State Legislature. Revised Code of Washington 46.20.055 – Instruction Permit
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Washington State Department of Licensing. Accessing Our Services