TRAFFIC MONITORING DEVICE, TRAFFIC MONITORING SYSTEM, TRAFFIC MONITORING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM WITH PROGRAM STORED THEREON

摘要

Provided is a traffic monitoring device capable of determining the cause of traffic congestion more reliably. The traffic monitoring device (10) has a vehicle information acquisition unit (11), an additional information acquisition unit (12), a congestion determination unit (13), and a cause determination unit (14). The vehicle information acquisition unit (11) acquires vehicle information pertaining to the travel state of a vehicle from data received from a detection device (20). The additional information acquisition unit (12) acquires additional information pertaining to an object other than a traveling vehicle and present in the vicinity of the traveling vehicle. On the basis of the vehicle information a congestion determination unit (13) determines whether congestion is occurring in each of a plurality of lanes of a road. On the basis of at least the additional information the cause determination unit (14) determines the cause of the congestion for a lane for which it has been determined that congestion is occurring.