YSK: As the driver of a motor vehicle, you are not being “nice” or “helpful” when you disregard conventional traffic flow to let someone go, you are creating traffic at best and causing accidents at worst.
from /r/YouShouldKnow
YSK：作爲機動車駕駛員，當你不顧常規交通流讓人時，不是 "好心"，也不是 "幫忙"，你最好是製造交通，最壞是造成事故。