The coupling is the mechanical interface that enables this.

The common interface has to be able to handle

A red-purple colour develops at the interface

STM (implementation of interface K optional

This is the interface between Euroloop and the LEU.

A deep red colour is produced at the zone of contact

Primary controllers MMI functionality

This is the technical interface between two RBCs.

Visual inspection and/or using electronic interface

Care should be taken not to disturb the boundary.

the provisions of section 6.8.6 concerning the connection interface.

Visual inspection and/or using electronic interface

the interface does not affect the authenticity and the integrity of the data of the tachograph

Visual inspection, and/or using electronic interface

This is the interface between Eurobalise and the LEU.