road or "Rýchlostná cesta" in Slovakia "S" may mean expressways in Austria ("Schnellstraße") and Poland ("droga ekspresowa") "T" T roads in Malaysia are roads in Terrengganu; in some parts of the U.S., they are township roads; In Estonia, T is the official prefix for national routes; "territorial" roads in Ukraine "U" may mean "unclassified" road; also used in Utah routes in the US "V" "W" "X" "Y" "Z" Multiple-letter abbreviations AP: Autopista de peaje (toll motorway) in Spain BAB: Bundesautobahn (federal motorway) in Germany, only used in documents, normally just A BR: Brazilian Federal Highway CH/CR: County Highway, Route or Road in the US or Canada among other countries CT: cao tốc (freeway/expressway) in Vietnam DK: droga krajowa (national road) in Poland DW: droga wojewódzka (voivodeship/provincial road) in Poland Fv: Fylkesvei (county road) in Norway IC: Itinerário complementar (complementary route) in Portugal IP: Itinerário principal (principal route) in Portugal NH: Is used to designate National Highway network in India. Also used to designate State Highways in the US State of New Hampshire. SH/SR: State Highway, Route or Road in New Zealand or the US TH/TR: Township Highway, Route or Road in the US US: United States Numbered Highway USBR: United States Bicycle Route Road systems Depending on the country, the letter attributed to a road may be part of a road grading system, be a shortening for a type of road especially in a foreign language or refer to a geographical zoning system, such as the Appalachian Development Highway System or the county highway systems of California, Iowa, and Michigan in the United States. International systems AH roads in the Asian Highway Network CA-: highways part of the Central American highway network E roads in the International E-road network in Europe EV: long-distance cycling routes in the EuroVelo network of Europe TAH: highways part of the Trans-African Highway network United Kingdom The United Kingdom has two road numbering schemes, one for Great Britain and the other for Northern Ireland. Both schemes follow the same principles, but the numbers are independent and the same road number may be duplicated between the two schemes. A, B, unnumbered, and unclassified roads In the United Kingdom, road numbers consist of a number up to 4 digits, prefixed with the letters A or B. The main road from London to Edinburgh was designated the A1 in 1921; the "A" indicates a "trunk" or "principal" road,