Introduction: The Gearshift That Sparked a Divide There’s an unspoken line drawn in the dirt at every truck stop in America: ...

An automated manual transmission uses the gearbox of a manual transmission and shifts it by computer, using a computer-operated single large-diameter disc clutch, otherwise similar to a manual clutch.

The PACCAR 12-speed automated transmission found on both Peterbilt and Kenworth trucks is ideal for linehaul applications. The company says the transmission can greatly reduce maintenance needs.