At first glance, an 18-speed transmission sounds like overkill. After all, most cars get by with five or six gears. But semi trucks are built for an entirely different purpose, and that is moving ...

MARSHALL, Mich. — A new, 18-speed automated transmission that will soon be available from Peterbilt Motors Co. can be spec’d for both on- and off-highway uses and with calibrations tailored to ...

Before getting into the trucks and putting the new transmissions to work, Kyle Crawford, Peterbilt’s vocational marketing manager, asked members of the trade press to think about driving up the ...

Kenworth has developed a new 18-speed automated transmission, offering a version for heavy Class 8 trucking and some off-highway uses. The Paccar TX-18 and Paccar TX-18 Pro leverage the company’s ...

Cummins said it will offer an 18-speed version of its Endurant automated transmission as an option for X15 diesel engines beginning next year. Cummins will offer an 18-speed version of its Endurant ...