One method of keeping tabs on tractors and trailers is to install an electronic proximity identification and reconciliation system. Each vehicle and trailer is fitted with a transponder or tag and each driver can be issued with a tag so that, when a vehicle passes a monitoring point, the identities of the tractor unit and trailer or of the driver and vehicle are detected by a reader or receiver and then recorded.
This makes it possible to keep a record of which tractor units are pulling which trailers when leaving a goods yard, to monitor which vehicles are being driven by which drivers at a terminal, etc.
This, and other developments in cargo security, will be addressed in Transport and Distribution Security, one of the subjects addressed on Security Management Stage 2, 15-26 October.