如图中所示，左边的标识是什么意思？As shown in the picture, what does the sign on the left mean?
前方桥梁狭窄，谁先到桥口谁先过桥Narrow bridge ahead, who arrives at the entrance of the bridge first goes first
遵循让行原则，红色箭头一边让行黑色箭头一边，确认对面没有车后，红色箭头一边的车辆再通过Follow the principle of giving way, red arrow gives way to black arrow, after confirming there are no cars coming from the opposite direction, the vehicle with red arrow goes through
红色箭头一边具有优先通过权The vehicle with red arrow has priority to pass
谁的车比较大，谁先通过Who has the bigger vehicle goes first