R1, R.I., R01 or R-1 may refer to: Military equipment R-1 tank, a Romanian tank from World War II R-1 (missile), a post World War II Russian rocket AEG R.I, a 1918 German super-heavy bomber design DFW R.I, a 1916 German prototype bomber aircraft HMS Caprice, a destroyer originally designated with Pennant Number R01 Linke-Hofmann R.I, a World War I German prototype bomber aircraft Polikarpov R-1, a Soviet Union copy of the 1931 British Airco DH.9A light bomber aircraft USS R-1 (SS-78), a 1918 United States Navy R-class coastal and harbor defense submarine a South African made version of the FN FAL battle rifle a version of the 1942 German Rheintochter ground-to-air missile Sentinel R1, a British airborne radar platform a Romanian designation of the Czechoslovak-designed tankette AH-IV Transportation Automobiles Jaguar R1, a British 1999 Formula One racing car Javan R1, a British sports car Nuro R1, an American autonomous van Ora R1, a Chinese electric city car Praga R1, a Czech sports car Rivian, R1S and R1T, an American electric mid-size SUV and pickup truck SIN R1, a Bulgarian sports car Subaru R1, a Japanese city car Aviation Beriev R-1, a 1952 Soviet turbojet-powered flying boat International Air Transport Association code for Sirin (airline) Motorcycles Yamaha YZF-R1, a motorcycle Rail Lines R1 (New York City Subway car) R1 (SEPTA), a former commuter rail line in Philadelphia, Pennsylvania, which was split into: Airport Line (SEPTA), or R1 Airport line SEPTA Main Line (R1 Glenside) Also called the Glenside Combined R1–RG1 (Rodalies de Catalunya), a commuter rail line in Catalonia, Spain Individual locomotive classes LCDR R1 class, a class of 0-4-4T steam locomotives built by the South Eastern and Chatham Railway to modified LCDR design in 1900 PRR R1, a 1934 American single prototype electric locomotive SECR R1 class, a class of 0-6-0T steam locomotives rebuilt by the South Eastern and Chatham Railway from the SER R class between 1910 and 1922 LNER Class R1, a class of British steam locomotives Roads R1 expressway (Czech Republic), an expressway in the Czech Republic R1 expressway (Slovakia), a road connecting Trnava and Banská Bystrica R1 ring road (Belgium), a ring road around Antwerp R-1 motorway (Spain), a future radial motorway connecting Madrid and El Molar Radial Road 1 or R-1, an arterial road of Manila, Philippines Computing R1 (expert system), a 1978 expert system written by John McDermott .r01, a RAR file extension