Which has priority, left lane change or right lane change?

[GabrielaFitz]

Right-turning vehicles must yield to left-turning vehicles. Below are relevant explanations: 1. When two vehicles are going straight, yield to the right: At intersections where both vehicles intend to proceed straight without traffic signal guidance, simultaneous straight movement would be highly dangerous. Hence, the "yield-to-right principle" is established, requiring vehicles to yield to those approaching from the right. This rule applies not only at intersections but also when vehicles from left and right sides merge into the same lane—right-side vehicles must be given priority in lane changing. 2. Right turns yield to straight-moving traffic: Right turns typically aren't controlled by traffic lights, whereas straight-moving traffic from the opposite direction usually has greater volume. To ensure traffic efficiency, right-turning vehicles must yield to straight-moving vehicles. At intersections without traffic signals, both left and right turns must yield to straight-moving vehicles.