Ghana Road Network
Roads in Ghana form a network of varied quality and capacity. Responsibility for the road network differs between trunk and non-trunk routes. Trunk roads, which are the most important roads, are administered by the Ghana Highway Authority, which was established in 1974 to develop the trunk road network. Ghana's 13,367 km of trunk roads accounts for 33% of the total road network of 40,186 km. The Department of Feeder Roads is responsible for the construction and maintenance of feeder roads in Ghana, while responsibility for urban roads lies with the Department of Urban Roads. Road  distances are shown in kilometers and Ghana speed limits are indicated in kilometers per hour (km/h). Generally, speed limits range from in urban areas, on Regional and Inter-Regional highways (R and IR routes), on National highways (N routes) and on motorways. Classification. Trunk roads in Ghana are classified as N for National routes, R for Regional routes, and IR for Inter-Regional routes. Each road is given a number which is combined with the prefix, for example N1, R40 and IR11, although their informal or traditional names may still be used or heard occasionally: for instance the Accra  - Kumasi Road (now part of the N6). National routes. National routes in Ghana are a class of roads and highways that form the trunk routes between major urban centers. Together, they form the backbone of the road system. This category of roads is designated with the letter N followed by a number indicating the specific route. Odd-numbered routes run east to west, while even-numbered routes run north to south. List of routes. AS Ashanti Region, BA Brong-Ahafo Region, CR Central Region, ER Eastern Region, GR Greater Accra Region, NR Northern Region, UE Upper East Region, UW Upper  West Region, VR Volta Region, WR Western Region Inter-regional routes. Inter-Regional routes, designated with the prefix IR, connect major settlements and regional capitals across regional borders. Running east to west are odd-numbered routes, while north-south routes are even-numbered. List of routes. AS Ashanti Region, BA Brong-Ahafo Region, CR Central Region, ER Eastern Region, GR Greater Accra Region, NR Northern Region, UE Upper East Region, UW Upper West Region, VR Volta Region, WR Western Region Regional routes. Regional routes are a mix of primary and secondary routes that link major settlements and serve as feeder  roads to the National route network. Major regional routes are designated with the letter R followed by a two-digit number, while Minor regional routes are designated with the letter R followed by a three-digit number. Designation as a Regional route does not imply that a road is maintained by a regional authority; some parts of the Regional route network are maintained by the Ghana Highway Authority, and parts in cities and towns may be ordinary streets maintained by the Department of Urban Roads and the Department of Feeder Roads. Regional routes vary in quality and size from dirt  roads to multi-lane paved highways. Major regional routes. Major regional routes are the second category of road in the Ghana trunk road network. They serve as feeder roads to the national route network, and are the primary trunk roads in areas where there is no national route. List of routes. AS Ashanti Region, BA Brong-Ahafo Region, CR Central Region, ER Eastern Region, GR Greater Accra Region, NR Northern Region, UE Upper East Region, UW Upper West Region, VR Volta Region, WR Western Region Minor regional routes. Minor Regional Routes are the third category of road in the Ghana  trunk road network. They serve as feeder roads connecting smaller towns to the national and major regional route network. List of routes. AS Ashanti Region, BA Brong-Ahafo Region, CR Central Region, ER Eastern Region, GR Greater Accra Region, NR Northern Region, UE Upper East Region, UW Upper West Region, VR Volta Region, WR Western Region Signage. Signage on the Ghana network conforms broadly to international norms. All length distances are shown in kilometers, speed is in kilometers per hour, whilst height and width restrictions are shown in meters. Signs may be of an informative, warning or instructional nature. Instructional  signs are generally circular, warnings are triangular, and informative signs are rectangular or square. Informative signs, which include directional signs, use white text on a blue background.