VEHICLE EARLY WARNING METHOD AND RELATED APPARATUS

Embodiments of this application disclose a vehicle warning method, to avoid misjudgment caused by factors such as map precision and lane infringement of a vehicle, thereby improving warning accuracy. The method in the embodiments of this application includes: A vehicle-to-everything V2X device receives a V2X message corresponding to a first vehicle. The V2X device determines, based on the V2X message, that the first vehicle is a dangerous vehicle in a warning area. The warning area is determined based on vehicle information of a second vehicle. The vehicle information includes at least position information of the second vehicle and a vehicle size of the second vehicle. The V2X device outputs warning information corresponding to the second vehicle. The embodiments of this application further disclose a vehicle-mounted device and a server, to improve recognition accuracy.