When vehicle arrive at the destination before unloading, the controller will give a sign to the front barrier and the signal lamp.
And the front barrier will be closed and the signal turns red to remind the driver to drive slower, the loadometer and the reader working at the same time.
The reader read the tag ID and transmits the information to the host and dictate load meter start to transmit the weigh detail as well as the camera take the photos to monitor whether the vehicle has been in the appointed position.
The brake will open to let the vehicle in after the host receiving and recording the tag ID and weigh detail.