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cxe2v #124
华盛顿州法典
RCW 46.61.100
Keep right except when passing, etc.
(2) Upon all roadways having two or more lanes for traffic moving in the same direction, all vehicles shall be driven in the right-hand lane then available for traffic, except (a) when overtaking and passing another vehicle proceeding in the same direction, (b) when traveling at a speed greater than the traffic flow, (c) when moving left to allow traffic to merge, or (d) when preparing for a left turn at an intersection, exit, or into a private road or driveway when such left turn is legally permitted.
(2) 在所有同方向设有两条或两条以上车道的道路上,所有车辆均应当在当时可供通行的右侧车道内行驶,但以下情形除外:
(a) 超越同方向行驶的其他车辆时;
(b) 行驶速度高于当前车流速度时;
(c) 为方便其他车辆汇入而向左变道时;
(d) 在法律允许左转的前提下,准备在交叉路口、出口左转,或准备左转驶入私人道路及车道时。
印第安纳州法典
IC 9-21-5-9
Except as provided in subsection (c), a person who knows, or should reasonably know, that another vehicle is overtaking from the rear the vehicle that the person is operating may not continue to operate the vehicle in the left most lane.
除本条第 (c) 款另有规定外,凡知道或合理应当知道后方有其他车辆正在超越其所驾驶车辆的人员,不得继续在最左侧车道内驾驶行驶。
随便拉两个黑底白字提到「行驶速度高于当前车流速度」以及「后方有其他车辆正在超越」的州法典给你看看。还需要更多例子吗?