Situation 3: when encountering a vehicle, the combination of lights: headlights flash "agree", headlights flash "refuse"
In the elevated or highway and some ordinary roads, often encountered lane lane situation, in the elevated turn, traffic flow to alternate. In this case, if the communication between the car and the car is not ideal, it is likely to cause a car collision accident.
In parallel road or traffic intersection section, it is very dangerous to steal each other's way, the need for the car must not directly forced lane change, and encounter a car hint to change the lane, is to agree to the other side lane change, or refuse the other side's request, the car must give the other side a clear hint.
In parallel or alternate traffic sections, lane changers will first turn on their turn signals in advance, wait at the intersection, and tell the car behind, "can I change lanes?" If the car behind agrees, slow down the speed and flash the headlights, which means "agree to change lane"; If it's not convenient, just flash the headlights a few times to say "no, I don't agree".


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