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Regulation 2
1. For the purposes of this Directive, the system constituting the trans-European high-speed rail system may be broken down into subsystems, as follows:
1.1 basically structural areas:
infrastructures
energy
control and command and signalling
rolling stock;
1.2 basically operational areas:
maintenance
environment
operation
users.
2. For each subsystem, the list of aspects relating to interoperability is indicated in the order given to the representative joint body for drawing up draft TSIs.
Under the provisions of Article 6(1), this order shall be established in accordance with the procedure laid down in Article 21(2).
Where necessary, the list of aspects relating to interoperability indicated in the order is specified by the representative joint body in accordance with the provisions of Article 5(3)(e).
3. Within the meaning of Article 5(3)(b), the following are regarded as basic parameters for achieving interoperability:
Minimum infrastructure gauges
Minimum radius of curvature
Track gauge
Maximum track stressing
Minimum platform length
Platform height
Power-supply voltage
Catenary geometry
ERTMS characteristics(1)
Axle loading
Maximum train length
Gauge of rolling stock
Minimum braking characteristics
Boundary electrical characteristics of rolling stock
Boundary mechanical characteristics of rolling stock
Operating characteristics linked to train safety
Boundary characteristics linked to outside noise
Boundary characteristics linked to outside vibrations
Boundary characteristics linked to outside electromagnetic interference
Boundary characteristics linked to inside noise
Boundary characteristics linked to air conditioning
Characteristics linked to the carriage of disabled persons.
European Rail Traffic Management System.