1. Provide pedestrian safety guarantee: The setting of traffic lights on Fushan sidewalk can effectively guide pedestrians to cross the road and ensure pedestrians to cross the road safely. The switch state of traffic lights clearly tells pedestrians when they can cross the road and when they need to wait. This reduces the occurrence of traffic accidents and ensures the safety of pedestrians.

2. Standardize traffic order: The setting of traffic lights can unify traffic signals and standardize traffic order. Both vehicles and pedestrians need to obey the instructions of traffic lights. This can reduce traffic congestion and chaos and improve traffic efficiency.