Department of Rural Roads

Department of Rural Roads (DRR) (Thai: กรมทางหลวงชนบท) is a department of the Thai government, under the Ministry of Transport. It maintains rural roads, under a different numbering scheme from national roads, which are managed by the Department of Highways (DOH), กรมทางหลวง, Krom Thang Luang).

Source: Wikipedia — Department of Rural Roads (CC BY-SA 4.0)