Usually road patrol is carried out by road administrator on a daily basis. The purpose of road patrol is to collect information to check its condition and status of use, in order to maintain a road at an always good state and to provide a road user with safety and relief by taking appropriate measures. JRC has constructed the "Road Patrol Support System" which supports such road patrol work, and delivered it to the Chubu Regional Developmental Bureau, Ministry of Land, Infrastructure, Transport and Tourlism. This system makes road patrol work more advanced and efficient, and supports quick collection of local information, and information sharing between road administrators in real time. It also helps grasping accumulated information statistically, and we expect our system can be utilized effectively for preventive maintenance.