# Commission Decision of 30 May 2002 concerning the technical specification for interoperability relating to the rolling stock subsystem of the trans-European high-speed rail system referred to in Article 6(1) of Directive 96/48/EC (notified under document number C(2002) 1952) (Text with EEA relevance) (2002/735/EC), Division 4.3.14: Particular specification for long tunnels

Extent: E+W+S+N.I.

The characteristics described in this paragraph shall only be applicable to interoperable trainsets called on to traverse long tunnels in normal service. The information to identify the lines where such tunnels are located is to be found in the infrastructure register.
(a) Passenger and train crew areas as well as drivers' cabs equipped with air conditioning:
The train crew shall be able to close external air vents to prevent the inhalation of fumes in the event of a fire in close proximity to the train. At the same time, the ducting for the air recirculation shall be designed so as not to distribute fumes to the whole train in the event of an internal fire located in a passenger saloon.
(b) Public address system:
In order to remain available in the event of an incident, the public address system shall be designed in such a manner that it will continue to operate the majority of its loud speakers in the event of a failure in one of its transmission elements.

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Source: https://www.legislation.gov.uk/eudn/2002/735/annex/division/4/division/4.3/division/4.3.14 (the official version)
Page: https://openlegislation.uk/eu-decision-2002-735/annex/division-4/division-4.3/division-4.3.14
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.