The invention provides a traffic safety control method for a highway. The traffic control method for the highway comprises a traffic management main system and vehicle-mounted subsystems. Each vehicle-mounted subsystem comprises a main control unit and an accelerator and brake integrated vehicle speed control unit, a Beidou satellite positioning unit, a steering control unit, a lamplight control unit, a voice prompt unit, a network unit and a storage unit, wherein the accelerator and brake integrated vehicle speed control unit, the Beidou satellite positioning unit, the steering control unit, the lamplight control unit, the voice prompt unit, the network unit and the storage unit are connected with the main control unit. Each vehicle starts the corresponding vehicle-mounted subsystem at an entrance of the highway, the vehicle-mounted subsystem transmits the road condition and the vehicle operating condition to the traffic management main system in real time, and the traffic management main system transmits commands to the subsystems in real time, so that traffic flow control is formed. According to the traffic safety control method for the highway, the operating tracks of the vehicles on the highway are monitored through the means of the Internet of Things, road crossing behaviors are prejudged and corrected automatically, the assistance is provided for standardizing and executing of traffic rules, and the traffic control method for the highway is high in efficiency.