Vehicle-road cooperation alarm method and system

The invention provides a train-road cooperation alarm method and system, and belongs to the field of railway communication, and the method comprises the steps: obtaining train number checking information and train operation state information; determining train position information based on the train number checking information and the train operation state information; according to the train position information, determining a target train in a preset range and a target train-road cooperation alarm ground device in the preset range; based on the GSM-R dedicated communication network and a driving safety early warning radio station corresponding to the target train-road cooperation alarm ground device, alarm information is sent to the target train; the alarm information sent by the GSM-R special communication network comprises an alarm event picture. The train operation position information is obtained from the two information channels, meanwhile, the warning information is uploaded to the target train through