If your lane is blocked by a vehicle turning left or a vehicle edging into the intersection from the right, slow down or stop instead of pulling out to go around the vehicle.
The motorized vehicle running in the fast lane should run at the prescribed speed for the fast lane, and should run in the slow lane if it fails to reach the prescribed speed for the fast lane.
车应当按照快速车道规定的速度行驶，未达到快速车道规定的行驶速度的，应当在慢速车道行驶。
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This paper has studied the effect of a slow-moving vehicle on traffic flow in a two-lane two-way road.