As technology advances, combination trucks get more sophisticated. The Vactor 2100Plus from the Vactor Manufacturing subsidiary of Federal Signal Corp. is the company’s newest iteration of the machine.Improvements range from simple, like built-in clamps to hold vacuum extension pipes in place on the side of the truck for storage, to highly complex, like a redesigned, hydraulically controlled pump that can deliver water at very low flows and conserve energy, extensive computerization in system controls, and a wireless remote unit.Representatives of Vactor and of its Wisconsin/Illinois distributor, Bruce Municipal Equipment of Menomonee Falls, Wis., demonstrated the truck for employees of the
