Methods and systems for remotely monitoring trailer or trailers attached to a vehicle is provided. The method includes associating an identification tag or ABS ECU that is configured to broadcast a trailer identification signal with a trailer. The method further includes receiving the trailer identification signal on-board the vehicle, associating the trailer identification signal with the vehicle, transmitting the trailer identification signal to a remote processor and receiving the trailer identification signal at the remote processor. The system comprises a mobile data terminal capable of generating and responding to telematic events comprising at least one processor, a graphical user interface, an input device, a memory and a set of executable instructions which may include a plurality of modules, such as a vehicle location module capable of receiving a GPS signal and transmitting the GPS signal to a remote processor for determining a location of a transportation unit.