慢车靠右行驶标志
MUTCD R4-3
速度较慢的车辆须靠右车道行驶,让速度较快的车辆从左侧超越。
标志外观
A vertical white rectangle with black legend reading SLOWER TRAFFIC KEEP RIGHT in bold capital letters.
什么时候会见到
Posted along multi-lane highways and grades where slower vehicles tend to hold up faster-moving traffic in the left lane.
该怎么做
If you are moving slower than surrounding traffic you must keep to the right lane, leaving the left lane clear for passing.
相关标志
来源:《统一交通控制设施手册》(MUTCD)第 11 版 — 美国联邦公路管理局(FHWA)。