The invention provides a vehicle-road cooperation 
mobile phone App 
system, and relates to the technical field of vehicle-road cooperation. The vehicle-road cooperation 
mobile phone App 
system comprises a cloud control platform, a 
client and a detection module, wherein the input end of the cloud control platform is electrically connected with the 
client, the input end of the cloud control platform is electrically connected with the detection module, the output end of the cloud control platform is electrically connected with the 
client, and the output end of the cloud control platform is electrically connected with the detection module. Danger judgment and early warning are carried out on the basis of 
perception, so that the 
perception level of a driver can be improved, the 
perception time of the driver is shortened, and the judgment decision time of the driver is effectively shortened; the reliability of the whole 
system can be improved through the vehicle-road cooperation 
mobile phone APP, so that the safety and reliability of the driving process can be improved; and the vehicle-road collaborative mobile phone APP system provides differentiated and personalized traffic travel information services for users, is good in user experience, high in intelligent degree, low in input cost, good in 
data stability and high in reliability, and can be widely applied to the traffic industry.