Highway serial rear-end collision accident safety early warning device and method

The invention discloses an expressway serial rear-end collision accident safety early warning device and method, and the device comprises a vertical rod camera group which comprises a plurality of camera devices which are disposed at intervals and are disposed on a vertical rod; the camera device comprises a camera device, a positioning device, a 4G/5G communication module, a Lora/NB-Iot module, an AI module, a character recognition module, an audible and visual alarm and a processor; the traffic prompt device group comprises a plurality of traffic prompt devices which are arranged at intervals; the traffic prompt device comprises a display screen and a Lora/NB-Iot module; the traffic prompt device group is used for receiving the traffic event information sent by the vertical rod camera group and then carrying out prompt and early warning; and the cloud traffic guidance system is used for receiving the traffic event information sent by the vertical rod camera group, analyzing the traffic event information and