Directive 2001/16/EC on the interoperability of the conventional rail system adopted on 19 March 2001, like that on the high-speed system, introduces Community procedures for the preparation and adoption of TSIs and common rules for assessing conformity to these specifications.
The directive requires a first group of priority TSIs to be adopted within three years in the following areas: control/command and signalling; telematics applications for freight services; traffic operation and management (including staff qualifications for cross-border services); freight wagons; and noise problems deriving from rolling stock and infrastructure. A second group of TSIs is under preparation.