||This article has multiple issues. Please help improve it or discuss these issues on the talk page.
|Traded as||NYSE: ALSN|
|Founded||Indianapolis, Indiana, U.S. 1915|
|Founder(s)||James A. Allison|
|Headquarters||Indianapolis, Indiana, U.S.A.|
Allison Transmission is an American manufacturer of commercial duty automatic transmissions and hybrid propulsion systems. Allison products are specified by over 250 of the world’s leading vehicle manufacturers and are used in many market sectors including bus, refuse, fire, construction, distribution, military and specialty applications. Headquartered in Indianapolis, Indiana, Allison Transmission has regional offices all over the world and manufacturing facilities in Indianapolis, Indiana and Szentgotthard, Hungary.
Allison began in 1909 when James A. Allison, along with three business partners, helped found and build the Indianapolis Motor Speedway. In 1911, Allison’s new track held the first Indianapolis 500 mile race. In addition to funding several race teams, Jim Allison established his own racing team in 1915 and quickly gained a reputation for his work on race cars and automotive technology in general.
When World War I began, Allison suspended racing and his company began machining parts, tools and masters for the Liberty airplane engine — the main power plant used in the US war effort. After the war, Allison entered a car in the 1919 Indy 500 and won. It was the last race Allison’s team ever entered. Instead, he turned his company’s attention to aviation engineering. The company’s expertise in aviation was the major factor in General Motors decision to buy the company following Jim Allison’s death in 1928.
Shortly after the sale to General Motors in 1929, Allison engineers began work on a 12-cylinder engine to replace the aging Liberty engines. The result was the V1710 12-cylinder aircraft engine and it made the company, now known as the Allison Engine Company, a major force in aviation.
Toward the end of World War II, General Motors formed Allison Transmission to put the engineers’ expertise to work in a new field — power transmissions for tracked military vehicles. The new division developed a transmission combining range change, steering and braking.
After WWII, Allison Transmission turned its attention to civilian transportation. Allison designed, developed and manufactured the first-ever automatic transmissions for heavy-duty vehicles like delivery trucks, city buses and even locomotives.
- 1949—Allison begins production of CD-850 tank transmission, division’s most historically significant transmission
- December 1949—First rail car transmission is produced; installed in Budd Rail Car
- October 1960—First Allison XT-1410-2 transmission is produced
- June 1961—Allison announces MT Series transmissions
- July 1962—Allison TT-2000 Hydro Powershift transmission is introduced
- March 1965—Introduction of dual path DP-8000, largest single-package Allison Powershift transmission to date
- July 1966—Allison announces new DP-8960 for large off-highway trucks
- November 1966—Lithium-chlorine fuel cell is unveiled
- October 1967—First prototype of the Allison-equipped U.S. Army main battle tank is unveiled in Washington, D.C.
- February 1969—Allison introduces electric gearshift control system for off-highway vehicles
- July 1969--Apollo 11 astronauts make man’s first landing on the moon; Allison propellant tanks are part of the descent stage
- September 1970—Merge with Detroit Diesel Engine to form Detroit Diesel Allison Division, headquarters in Detroit
- January 1971—Allison introduces first 4-speed automatic transmission for 72,000 lb (33,000 kg). GVW highway vehicles; Allison model HT-740
- April 1973—First fully automatic transmission for large trucks, scrapers and other types of heavy-duty off-highway vehicles is introduced; Allison model CLBT 750
- 1974—First European office is established
- October 1982—A new generation heavy-duty automatic transmission, the Allison DP 8962, is announced; incorporates over 15 new technology internal changes
- May 1983—GM sells Allison Gas Turbine Division; Allison becomes part of newly formed GM Power Products and Defense Operations Group
- June 1986—First X200 military transmission is released
- December 1987—Detroit Diesel Allison becomes Allison Transmission, Division of General Motors
- February 1991—Allison introduces electronically controlled World Transmissions
- November 1995—Allison adopts lean manufacturing principles and begins implementing Allison Production System (APS), a cellular manufacturing system; some 10,000 machines and support equipment are re-arranged through all plants
- 1999--Hybrid bus program is demonstrated for New York City Transit Authority
- June 1999—Allison introduces 1000 Series and 2000 Series fully automatic transmissions
- 2000--Hybrid electric program is launched
- September 2000—Test Track 2000 is first customer ride and drive simulating real-world operating conditions; held at Walt Disney World in Orlando, Florida
- January 2001—Allison unveils first-of-its-kind parallel hybrid technology
- November 2003—Allison's Ultimate Truck Driving Adventure takes ride and drive experience to extremes in the high desert of Nevada
- November 2003—Allison Vocational Models are released to better serve specific applications
- May 2005--Shanghai Customization Center is opened
- June 2007—GM announced that it was selling Allison Transmission to private equity firms The Carlyle Group and Onex Corporation, in a deal valued at $5.6 billion. The transaction closed on August 7, 2007.
- 2008—Allison introduces on-board prognostics on model-year 2009 automatic transmissions
- 2009—Allison took an approximately 10% stake in U.K.-based Torotrak
- 2010-Manufacturing plant opened in Chennai, India also establishing regional headquarter with executive,marketing and sales offices
- June 2010-Allison dedicates a new hybrid manufacturing plant in Indianapolis, Indiana.
- March 15, 2012 Allison Transmission began trading on the New York Stock Exchange under the symbol ALSN.
Past Products 
- Allison V transmission—VH, VH2, VH4, VH5, VH6, VH7, VH9, VS1, VS2-6,VS2-8, V730, V731, VR731, VR731RH
- Allison MH marine reverse and reduction gear
- Allison AT transmission—AT540, AT542, AT543, AT545
- Allison MT transmission—MT640, MT643, MT644, MT647, MT648, MT650, MT653DR, MT654CR, MTB643, MTB644, MTB647, MTB648, MTB653DR, MTB654CR, MT30, MT41,MT42
- Allison HT transmission—HT740D, HT740RS, HT741, HT746, HT747, HT748, HTB748, HT750CRD, HT750DRD, HT754CRD, HT755CRD, HT755DRD, HTB755CRD, HTB755DRD
- Allison World Transmission—MD3060, MD3060P, MD3560, MD3560P, MD3066, MD3066P, HD4060, HD4060P, HD4560, HD4560P
- Highway Series
- Rugged Duty Series
- Pupil Transport/Shuttle Series
- Allison Bus Series
- Emergency Vehicle Series
- Motorhome Series
- Truck RV Series
- Specialty Series
- Oil Field Series
- Hybrid Bus Series
- Military Products
- 1000 Series
- 2000 Series
- 3000 Series
- 4000 Series
- Torqmatic Series
- Off Highway Series (5000, 6000, 8000, and 9000)
Hybrid Bus Series Transit Clients 
GM-Allison debuted the hybrid technology for transit buses in 2003. Through 2011, it intends to introduce 16 hybrid models.
In 2008, the number of GM-Allison hybrid buses are more than 2,700 units in 81 cities in the U.S., Canada and Europe. This includes:
- TransLink (British Columbia)
- Dresden, Germany
- King County Metro Transit Authority
- Massachusetts Bay Transportation Authority
- Minneapolis-Saint Paul Metro Transit
- Regional Transportation Commission of Southern Nevada
- Southeastern Pennsylvania Transportation Authority
- Washington Metropolitan Area Transit Authority
- Regional Transportation District Denver, CO
- Maryland Transit Administration
- Indianapolis Public Transportation Corporation
- Allison Transmission Company Overview
- Allison Transmission History
- Allison Transmission History 1910-1919
- Allison Transmission History 1920-1929
- Wikipedia.org-Allison Engine Company
- Allison Transmission History 1930-1939
- Allison Transmission History 1950-1959
- Allison Transmission History 1940-1949
- Allison Transmission History 1960-1969
- Answers.com-Allison Gas Turbine Division
- United Defense M113 History
- Reuters/Yahoo! News: "GM selling Allison for $5.6 billion," 2007-06-28
- SAE Off-Highway Engineering Online: "Greater efficiency drives demand for automated transmissions" 2009-04-29
- Truckinginfo.com 6/30/2010 Allison Dedicates New Hybrid Manufacturing Plant
- "Allison Transmission > Commercial Products". Retrieved 1 September 2011.
- "Allison Transmission > Commercial Products > Hybrid Bus". Retrieved 1 September 2011.
- "Allison Transmission > Military > Current Military Programs". Retrieved 1 September 2011.
- "Commercial Transmissions > 1000 Series". Retrieved 1 September 2011.
Hybrid Buses 
- Hybrid buses will save an estimated 2.4 million US gallons (9,100 m3) of fuel annually in Washington D.C., Philadelphia and Minneapolis/St. Paul
- Low-Emissions Hybrid Buses.