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Allison Transmission Schedules Second Quarter 2012 Results Conference Call for July 30

Allison Transmission

INDIANAPOLIS, July 16, 2012 /PRNewswire/ -- Allison Transmission Holdings Inc. (NYSE: ALSN), the world's largest manufacturer of fully-automatic transmissions for medium- and heavy-duty commercial vehicles and hybrid-propulsion systems for city buses, will hold its second quarter 2012 results conference call at 4:30 p.m. Eastern Time on Monday, July 30. Lawrence E. Dewey, Chairman, President and Chief Executive Officer, and David S. Graziosi, Executive Vice President and Chief Financial Officer, will review the company's financial performance for the period.

The U.S. toll-free dial-in for the conference call is 1-888-203-7337 and the international dial-in number is 1-719-457-2641. Passcode for the call is 9714928. A live webcast of the conference call will also be available on the investor relations page of the Company's website at http://ir.allisontransmission.com/. The press release announcing Allison Transmission's second quarter 2012 results will also be available on the website under "Financial News Releases".

For those unable to participate in the conference call, a replay will be available from 7:30 p.m. Eastern Time on July 30, 2012 until 11:59 p.m. Eastern Time on August 6, 2012. The U.S. toll-free replay dial-in number is 1-877-870-5176 and the international replay dial-in number is 1-858-384-5517. Replay passcode is 9714928.

About Allison Transmission

Allison Transmission (NYSE: ALSN) is the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in electric hybrid-propulsion systems for city buses. Allison transmissions are used in a variety of applications including refuse, construction, fire, distribution, bus, motorhomes, defense and energy. Founded in 1915, the company is headquartered in Indianapolis, Indiana, USA and employs approximately 2,900 people worldwide. With a market presence in more than 80 countries, Allison has regional headquarters in the Netherlands, China and Brazil with manufacturing facilities in the U.S., Hungary and India. Allison also has approximately 1,400 independent distributor and dealer locations worldwide. For more information, visit allisontransmission.com.