Air-Weigh® in-dash on-board truck scales are now available in Mack trucking highway models with rear air suspension. Adding Air-Weigh improves productivity and reduces operating costs and delays caused by check-weighing. The Air-Weigh system consists of an in-dash gauge and a remote trailer scale. Air-Weigh's gauge displays steer, drive and lift axle weights, up to seven trailer suspension weights if equipped, GVW and net payload weight. An alarm output is standard and can be connected to a light or audible indicator.