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Washington Personal Driver Knowledge Test
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Vehicle Safety, Documents & TowingStandalone practice
You will drive your 7-year-old nephew, who is 4 feet 2 inches tall. The adult seat belt does not fit him yet. Which setup follows Washington law?
Correct answer: A booster seat in the back seat, used with the adult lap and shoulder belt
Why
Washington uses both age and size. A child under 2 rides rear-facing, a child under 4 who no longer rides rear-facing uses a forward-facing seat with a harness, and an older child under 4 feet 9 inches uses a booster, typically until age 8 to 12. Install each seat as the vehicle and seat makers instruct; a certified child passenger safety technician can check it.
Verified against Washington Driver Guide · Child seats · p. 53, 54
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