YSK that when in heavy traffic and a lane is closing, using the closing lane until it ends is not cutting in line but actually improving the flow of traffic (aka the "zipper merge")
from /r/YouShouldKnow
YSK認爲,當交通繁忙,一條車道關閉時,使用關閉的車道直到它結束,並不是插隊,而是實際上改善了交通流(又稱 "拉鍊式併線")。