T1

T1, T01, T.1 or T-1 may refer to:

Technology

• T1, a copper based digital transmission system and the first generation of T-carrier
• Digital Signal 1 as in a "T1" (phone/internet) line
• T1, a common size (3mm) for through-hole light-emitting diode devices
• T1, a bedside television unit used by Hospedia
• T1 (or T-code), a temperature classification for electrical equipment used in hazardous locations
• T.1, the duration of a photographic flash
• T1 font or Cork encoding, a character encoding used in computer programming and telecommunications
• UltraSPARC T1, a microprocessor

Biology

• Cyclin T1, a human gene
• GalNAc-T1, a human gene
• Ribonuclease T1, a fungal endonuclease
• in anatomy:
  • The first of the thoracic vertebrae in the vertebral column
  • thoracic spinal nerve 1, a nerve emerging from the vertebrae
• in Medicine:
  • the TNM staging system classification for a small cancer tumor
  • T₁, the spin–lattice relaxation time constant used for T₁-weighted MRI, a form of magnetic resonance imaging

Mathematics

• T₁ spaces, a topological spaces satisfying the T₁ separation axiom
• $\mathbb{T}^1$, the 1-torus

Vehicles and transportation

Automotive

• Caparo T1, a 2006 British sports car
• CWS T-1, a 1925 Polish serially-built car
• EE-T1 Osório, a 1985 Brazilian main battle tank
• Ford T1 platform, a vehicle architecture used in large SUVs
• Mercedes-Benz T1, a 1977 van/truck also called a transporter
• a 1965 British Bentley T-series model
• a Volkswagen Type 2 van generation
• a Dakar Rally car class
• a Rally raid car class

Aircraft

• T-1 Jayhawk, a jet trainer plane used by the U.S. Air Force since 1992
• T-1 SeaStar, a U.S. Navy turbojet trainer plane first flown in 1953
• T.1 Swift, a British prototype carrier-based torpedo plane of 1921
• Bulldog T.1, a British light trainer plane for the RAF flown in 1972
• Chipmunk T.1, a Canadian-built de Havilland DHC-1 Chipmunk version made in 1946
• Fuji T-1, a Japanese trainer plane of 1958
• Gnat T.1, a British light jet trainer plane of 1959
• Grob Tutor T.1, a German general aviation trainer plane of 1985
• Hawk T.1, the original version of the Hawk jet warplane first flown by the RAF in 1976
• P.57 Sea Prince T1, a British anti-submarine warfare trainer plane of 1948
• Percival Provost T.1, a British trainer plane of 1952
• Prentice T.1, a British trainer plane for the RAF of 1941
• Short Tucano T1, a British turboprop trainer plane for the RAF of 1989
• Slingsby T.1 Falcon 1, a British-made airplane built by Parikshzk.
• Sopwith T.1 Cuckoo, a British biplane torpedo bomber of 1918
• Typhoon T1, a version of the Eurofighter called the "Typhoon"
• Vigilant T.1, a German light airplane of 1980

Rail transport

Locomotives

• LSWR T1 class, an 1888 0-4-4T steam tank locomotives class
• PRR T1, a locomotive
• Reading T-1, a 1945 4-8-4 steam locomotive class

Rapid transit

• T-series (Toronto subway car), a subway car used by the Toronto Transit Commission
• a model of the OS T1000 train of the Oslo Metro

Commuter rail

• North Shore, Northern & Western Line, a rail service in Sydney numbered T1

Tramways

• Tatra T1, a 1951 Czechoslovakian tramcar
• Paris Tramway Line 1
• Trambaix T1 Route, a tram line in Barcelona
• a tramway line in Lyon, France
• Istanbul Line T1 in Istanbul, Turkey

Roads/public transport routes

• T1, the former Belfast-Bangor Irish Trunk Road now part of the Republic of Ireland’s M1 motorway
• Junction T1 of the M6 Toll in Curdworth
• Malaysia Federal Route T1, a road connected to the Malaysia Federal Route 3685 and Jalan Tengku Omar
• Cornwall Bus Service T1, a bus service and coaching holiday operator primarily located in mid-Cornwall, England, United Kingdom

Ships

• HMNZS Matai (T01), a Royal New Zealand Navy lighthouse tender of 1941, then converted to a minesweeper
• MV Transpacific (T-1), a 1992 oil tanker under long-term charter to the United States Military Sealift Command
• USS T-1, a disambiguation page
• Yugoslav torpedo boat T1, a torpedo boat built for the Austro-Hungarian Navy in World War I, then serving in several European navies until 1959

Other transportation

• Terrible One, an American bicycle company

Other meanings

• T1 Aquarii, a star
• T1 Carinae, a star
• T-1, the first Jupiter Trojan survey, a subproject of the Palomar–Leiden survey
• T1 Light Tank, a U.S. prototype tank
• T1 General, a tax form used in Canada
• T-1 (Terminator character), a fictional robot in the Terminator film franchise
• T-1 visa, a type of visa allowing certain victims of Human trafficking to remain in the United States.
• DSC-T1, a 2004 Sony Cyber-shot T series camera model
• AC NM AE T1 mine, a Brazilian minimum metal anti-tank blast mine
• AP NM AE T1 mine, a Brazilian small minimum metal anti-personnel mine
• G7a/T1, a WWII German standard issue torpedo
• Module T1, an adventure module for the fantasy role-playing game Dungeons & Dragons
• Soyuz T-1, a 1979 space mission
• Tour T1, an office skyscraper in La Défense, Paris, France
• T-1, trademark for A514 steel, a type of steel
• T1, a level on TORRO scale, a scale for tornado power
• Tenor 1, a classification of the tenor voice part and the highest voice part in a TTBB chorus