Sterling Truck Corp. has added the Acterra Crew Cab option to its line of medium-duty vocational trucks. The product offering introduces several features, including the industry's largest interior passenger compartment, measuring a full 113-in. from the front to the rear wall inside the cab. The Acterra Crew Cab features multiple diesel engine options, including the standard MBE900 engine, rated from 170 hp to 300 hp, and the optional Caterpillar 3126 and Cummins ISL and ISC, with available ratings from 190 hp to 350 hp. Available transmissions include those from DaimlerChrysler Powersystems, Eaton-Fuller and Allison. The Acterra Crew Cab features a 163-inch BBC and is available with gross vehicle weight ratings from 19,000 lbs. to 46,000 lbs.