Anti-collision warning system for vehicles on highway

The invention discloses an anti-collision warning system for vehicles on a highway. A highway vehicle-mounted device measures speed of a vehicle independently, judges whether the speed of the vehicle is lower than a set safety value of the highway and can send information for warming automatically or manually. A highway entrance test starting device tests performance of the highway vehicle-mounted device, starts the highway vehicle-mounted device and sets safety speed limit values. A highway exit confinement device confines functions of the highway vehicle-mounted device. A highway driving direction frequency setting device is used for setting communication frequencies of the highway vehicle-mounted device in a highway driving direction. A highway monitoring and communicating device monitors driving states of the vehicle and outputs an ant-collision warning when the vehicle is in an abnormal driving state. The anti-collision warning system for the vehicles on the highway is capable of monitoring in real time and receiving front traffic safety abnormity warning information, and safety limit values changed due to weather and highway conditions are sent so as to improve safety of highway traffic.