What are the basic elements of road traffic system? What does it matter?

Answer: (1) people, including drivers, pedestrians and passengers; (2) Vehicles, including motor vehicles and non-motor vehicles; (3) Roads, including highways, urban roads, passages and related facilities; (4) Environment, including off-road landscape, management facilities and meteorological conditions. Among these four factors, human factor is the most critical factor for audio road traffic safety; Driver is the understanding of the system, the sender and operator of instructions, and the core of the system. Other factors can only play a role through people. Only by coordinating these four elements can the safety requirements of road traffic system be realized.