Washington Knowledge Test: How to Prepare and Pass

Before you study: do you need this test at all?

The only people excused are those holding a valid license issued by a U.S. state, the District of Columbia, a U.S. territory or the U.S. Department of State, or a British Columbia Class 5, German or South Korean license. Everyone else takes it before getting a Washington license, including learner permit holders, people with an expired out-of-state license and holders of licenses from countries DOL does not list.

For teens, the course decides the timing. A 15 year old with a seat in an approved course gets the permit without a test, and the school usually gives the knowledge test before the course ends. At 15 and a half with no course, the test comes first and the permit after, and no license is possible until 18 unless a course is finished later.

Before you book: where to test and what it costs

In Washington, the bulk of knowledge tests are given by driving schools that DOL has licensed as testers. The driver guide adds a second option: reserving a slot at a licensing office in License Express. DOL does not publish one price; it says fees differ by location and that the tester will quote you, so expect different prices in different towns.

When you phone around, ask for the fee per attempt, whether your language is offered, and the wait before a retest if you fail. DOL's own wording on retests is vague: a wait may apply.

While you study: what the driver guide covers

DOL names the English guide, form 520-400, as the study source. It is 191 pages, revised April 2025, and arranged in five chapters: Licenses, Vehicles, Drivers, Roads and Risks.

Spend most of your time on chapter 4, Roads. It covers sharing the road with pedestrians, school and transit buses, large vehicles, cyclists and light rail; traffic laws and control devices; ramp meters; signs, including the ones used in work zones; roundabouts; diverging diamond interchanges; pavement markings; toll and HOV lanes; emergency and school zones; and how to park on a hill. Chapter 5 is about speed and risk. Chapter 3 handles impairment, fatigue and distraction. Chapter 1 explains licensing rules, including the alcohol law and the open container law.

Besides English and a plain text version, DOL posts the guide in Amharic, Arabic, Chinese (both Simplified and Traditional), Dari, Farsi, Hindi, Japanese, Korean, Punjabi, Russian, Spanish, Tagalog, Ukrainian and Vietnamese.

While you study: using the practice quiz well

DOL's online practice test, in English and Spanish, mirrors the real exam given at schools and DOL offices. It is only five questions long, four correct passes, and it shows the same five every time.

Use it to learn the format, then put it away. DOL recommends the driver guide for preparation, so work through it a chapter at a time and drill yourself on road signs, who yields to whom, and the figures the book spells out, such as what to do when you pass an emergency scene (move over, slow down).

A simple plan that works for many students: one chapter per evening over a week, with chapter 4 split across two nights, then a final night quizzing yourself on every sign in the guide.

On test day: scoring and what happens next

There is no separate signs section; all 40 questions are multiple choice and you need 32 right. DOL lists no official time limit, so ask your tester how long you get.

The two year life of a pass works in both directions. A student who passes early in the course still has it on file at 16. On the other hand, a teen who tested at 15 and a half without a course and then lets more than two years slip before the skills exam may have to sit it again. The guide adds one more trigger: when both permit renewals are spent, getting another permit requires a fresh pass, except for students currently in a driver training course.

If you need another language or an accommodation

As of October 2026 you can test in any of 12 languages: Arabic, Chinese (Simplified or Traditional), English, Japanese, Korean, Punjabi, Russian, Spanish, Tagalog, Ukrainian and Vietnamese. DOL cautions that individual schools may offer fewer, so check first.

DOL grants reasonable accommodations when asked. Call 360-902-3900 or ask at a licensing office, and for help in a language not covered, write to [email protected], the address for DOL's Language Access team. Testing at a school? Mention any accommodation when you schedule.

After the test: vision screening and the work zone course

Vision and medical screening happens at the licensing office when you apply for the license itself. Falling short without glasses or contacts can mean a restriction, or DOL may ask an eye doctor to complete a Visual Examination Report for you.

Anyone under 25 applying for a first license from November 1, 2026 onward also completes the Work Zone and First Responder course, free and online from DOL. Budget about an hour; it has its own test, comes in 14 languages and fits before or after your other training and testing. It is separate from the permit test, but it makes sense to do it in the same study stretch.

If you are an adult or new to the state

The exam is identical for every age. In 2026, an adult needs a permit for just two reasons, practicing on public roads or enrolling in driver training, which is why many adults sit both tests with no permit at all. That shifts on January 1, 2027 for 18 year olds getting a first license: they must take driver education, and most of them will test through their school.

Newcomers with an expired out-of-state license pass both the knowledge and skills exams. A teen arriving with another state's permit cannot exchange it, so if your teen is 15 and a half or older, schedule the knowledge test soon after you settle in.