Who is at fault when two cars change lanes in the same direction?

[Cruz]

It should be the responsibility of the left car. The reasons are as follows: 1. The left car is relatively easier to control: Changing from left to right is a transition from the fast lane to the slow lane, during which the left car should decelerate, making the vehicle relatively easier to control. Conversely, changing from right to left is a transition from the slow lane to the fast lane, where the right car is in the process of accelerating, increasing the difficulty of vehicle control. 2. China implements the principle of right-hand traffic: In China, where right-hand traffic is practiced, the driver is on the left side of the vehicle. When two cars collide, the driver in the right lane is closer to the collision point and more likely to be injured. Therefore, from the perspective of protecting personal safety, the right-side vehicle should have the right of way. 3. The priority clause of the Geneva Convention on Road Traffic stipulates: The priority clause of the Geneva Convention on Road Traffic, dated September 19, 1949, states that when two vehicles without priority arrive at an intersection simultaneously, in right-hand traffic countries, the vehicle on the right has the right of way, while in left-hand traffic countries, the vehicle on the left has the right of way. China practices right-hand traffic, which is consistent with the convention, and thus the right-side vehicle should have the right of way.