Washington Personal Driver Knowledge Test
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Passing target: 80% (32/40)
Traffic is slow because the right lane is closed ahead for road work. You are in the left lane, which stays open. At the merge point, drivers from the closing lane are merging. What should you do?
A is in the open left lane. Silver B is in the closing right lane beside the merge taper, with silver C farther ahead in the open lane. No merging order is marked.
Correct answer: Let one car from the closing lane in ahead of you, then keep a steady pace
Why
When traffic is slow or stopped because a lane closes, drivers in both lanes should use their lanes up to the merge area and then alternate, like the teeth of a zipper. This makes the order predictable, cuts down sudden lane changes, and keeps traffic moving better. Drivers in the ending lane should not force in early, and drivers in the open lane should not block them.
Verified against Washington Driver Guide · 5.3 Merging: Zipper merging · p. 160, 161
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