Why Should the Left Lane Yield to the Right Lane When Changing to the Same Lane?

[VanPreston]

Because it is a mandatory traffic regulation. Here is a partial introduction about vehicle lane changing: 1. Relevant regulations: Drive in order and do not change lanes frequently; do not change more than two lanes at once; when vehicles from both the left and right lanes change to the same lane, the vehicle from the left lane must yield to the vehicle from the right lane. 2. Precautions: Before changing lanes, signal your intention to change lanes. For example, if changing to the left lane, turn on the left turn signal; if changing to the right lane, turn on the right turn signal to alert other vehicles.