Truckload carrier T&M Express will add TrackWare trailer-tracking service to its 110-tractor fleet. TrackWare from @Track Communications Inc., Richardson, TX, communicates real-time trailer location and event status using Cellemetry Data Service to transmit short data messages on the overhead control channel of the existing wireless infrastructure. T&M Express currently uses @Track's Series 5000 mobile communications system and Platinum Service fleet management systems.