INFORMATION PROCESSING SERVER, PROCESSING METHOD OF INFORMATION PROCESSING SERVER, AND STORAGE MEDIA

The information processing server includes an unstable behavior position recognition unit configured to recognize an unstable behavior position being a position on a map, at which the target vehicle has performed an unstable behavior, based on the target vehicle data, a support target vehicle determination unit configured to, when the unstable behavior position recognition unit recognizes the unstable behavior position, determine whether or not there is a support target vehicle, based on the unstable behavior position and the target vehicle data, the support target vehicle being the target vehicle estimated to perform the unstable behavior at the unstable behavior position within a predetermined time, and a vehicle support unit configured to, when the support target vehicle determination unit determines that there is the support target vehicle, perform, on the support target vehicle, a vehicle support for suppressing performing of the unstable behavior at the unstable behavior position.