A system configured for generating intersection route regulation information, comprising: a first memory section that stores first route regulation information of reference intersections; a probe information processing/determining device that processes probe information to make a determination; a probe determination information storage section (502, 504) that stores probe determination information obtained by said probe information processing/determining device; a determination object intersection designating device that designates an intersection to be determined in road map information; and a determination object intersection selecting device that refers to said first memory section for said designated intersections to be determined, and selects said intersections to be determined without said first route regulation information provided, characterized by a second route regulation information providing device that provides each specific intersection of a main road and a narrow street, among said selected intersections to be determined, with second route regulation information that indicates that a right turn and passing through said specific intersection are prohibited; a route regulation information verifying/correcting device that verifies said second route regulation information provided to said specific intersection based on said probe determination information, and corrects said second route regulation information based on the result of said verification; a third route regulation information generating device that generates third route regulation information based on the result of said verification and correction of said route regulation information verifying/correcting device; and a third memory section that stores said third route regulation information in association with said specific intersection. a first memory section that stores first route regulation information of reference intersections; a probe information processing/determining device that processes probe information to make a determination; a probe determination information storage section (502, 504) that stores probe determination information obtained by said probe information processing/determining device; a determination object intersection designating device that designates an intersection to be determined in road map information; and a determination object intersection selecting device that refers to said first memory section for said designated intersections to be determined, and selects said intersections to be determined without said first route regulation information provided, characterized by a second route regulation information providing device that provides each specific intersection of a main road and a narrow street, among said selected intersections to be determined, with second route regulation information that indicates that a right turn and passing through said specific intersection are prohibited; a route regulation information verifying/correcting device that verifies said second route regulation information provided to said specific intersection based on said probe determination information, and corrects said second route regulation information based on the result of said verification; a third route regulation information generating device that generates third route regulation information based on the result of said verification and correction of said route regulation information verifying/correcting device; and a third memory section that stores said third route regulation information in association with said specific intersection.