Allison Transmission is the largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles. The company's automatic transmissions allow customers to achieve better fuel and operator efficiency than less expensive manual and automated manual transmissions. Allison serves several end markets, including on- and off-highway equipment and military vehicles. Its on-highway business commands approximately 60% global market share. The company's transmissions can be found in class 4 through 8 trucks, buses, and a limited number of large passenger vehicles (heavy-duty pickup trucks and motorhomes). Allison also produces commercial hybrid propulsion systems and is developing fully electric powertrains.