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A1 means "very good" or in the best possible condition. It is usually considered to derive from the shipping insurers, Lloyds of London's description of "A1 at Lloyd's", a first class ship. It was also a term popularised by the British War Office ABC system of classification for recruits in the First World War. A-1 recruits were considered fit for general service overseas. A1 and A-1 are often used at the start of commercial business names so that they appear first in the telephone directory. For example, "A1 Cleaning Services" or "A1 Tool Hire".
A1
A1 can mean:
- Audi A1
- Adventure One (A1), a TV channel owned by National Geographic
- a1 (band), a British boy band
- A1 (comic) is a British anthology comic
- A1 (milk), milk containing the A1 -casein protein
- A1 (rocket), a German rocket design from the 1930s
- A1 (shipping), a symbol indicating shipbuilding quality
- A1 (theater), a soundboard operator
- A1 (TV station) is a television channel in Macedonia
- A1 paper size, paper size as defined by ISO 216
- A1 Grand Prix series
- A1 Steak Sauce, a brand of condiment
- A1 broth, used to detect fecal coliforms
- A1 Ethniki is a Greek basketball league
- A1 Mine Settlement, Victoria, a town in Victoria, Australia
- A1 Ring, the race track at which the Austrian Grand Prix was run from 1997 to 2003 (formerly called Österreichring)
- 0-2-2 (Whyte notation), as the equivalent UIC classification for railway locomotive wheel arrangements
- America One, a television network in the United States
- HLA-A1 is a Human MHC Serotype HLA-A
- HMS A1, a British A class submarine of the Royal Navy
- the primary auditory cortex, that is, the part of the brain which processes hearing
- RTV Slovenia, the first programme of Radio Slovenia
- TCSEC, A security class
- In town and country planning in the UK, A1 is the code for permission to use specific land or premises for general retail.
- The first level achieved in the Common European Framework of Reference for Languages when learning a language
- LNER Class A1/A3,a locomotive designed by Sir Nigel Gresley,including the famous No. 4472 Flying Scotsman. Originally Class A1, later reclassified Class A3
- LNER Peppercorn Class A1 a Pacific locomotive designed by A. H. Peppercorn
- A1 was the code-name for the Microsoft security service Windows Live OneCare
- USS A-1 (disambiguation), US Navy ships
A-1
- A-1 Skyraider, a United States Air Force/Navy single-seat attack bomber
- USS A-1 (SP-1370), a houseboat taken over by the United States Navy in 1917
- USS Plunger (SS-2), the lead ship of the Plunger class submarine series
- Battle Angel Alita, as her nickname on Tuned days.
- Alastair Ralphs (professional wrestler) (born 1977), as one of his stage names
- Canon A-1, a camera by Canon
- Company A-1, An outfit in the Texas A&M Corps of Cadets
A1 Roads
There are several roads and highways with the designation A1: entries are alphabetical by country
- A1 is the designation for the Majority of the Highway 1 route in Australia.
- A1 Westautobahn, a motorway in Austria
- A1 road (Belgium), Brussels - Antwerp - Breda
- Trakiya motorway in Bulgaria, carrying the code A1, connecting Sofia and Burgas via Plovdiv.
- A1 highway (Croatia), connecting the capital Zagreb to the second largest city located in Dalmatia, Split
- A1 highway (Cyprus), connecting Nicosia to Limassol
- A1 highway (Kenya), long road in Kenya from Tanzanian to Sudanese border
- A1 autoroute (France)
- Bundesautobahn 1 (Germany) connecting Oldenburg (Holstein) to Saarbrücken
- A1 road (Great Britain), a key artery connecting London to Edinburgh, and many towns and cities in between. See A1 road (London) for the London sections of the road
- A1 Motorway (Italy), connecting Milan to Naples
- A1 road (Isle of Man), connecting Douglas and Peel
- A1 highway (Lithuania), connecting Vilnius to Klaipėda
- A1 road (Luxembourg), connecting Luxembourg City to the German A64
- A1 motorway (Netherlands), connecting Amsterdam to Enschede and further on to Germany (direction Osnabrück)
- A1 road (Northern Ireland), connecting Belfast to Newry and to Dublin in the Republic of Ireland via the N1/M1.
- Autostrada A1 (Poland) - planned highway that will span Poland from north to south.
- A1 - Auto-estrada do Norte, in Portugal, connecting Lisbon and Porto
- A1 freeway (Romania), connecting Bucharest to Piteşti
- A1 motorway (Slovenia), connecting Maribor to Koper via Ljubljana
- Autovía A-1, is a Spanish autovía connecting Madrid to Irún (French border).
- A1 (Switzerland), connecting St. Margrethen to Geneva
- National Road 1A (Vietnam), connecting the northernmost and southernmost areas of the country
- A1 (Zimbabwe),Long National Route in Zimbabwe
