Division Essential requirement 2.4.1 Section 8:

‘Appropriate provisions must be laid down to take account of the particular safety conditions in very long tunnels.’

The provisions relating to fire and fume protection, the trainset design with a driver's cab at each end, emergency alarms which allow the driver to chose his stopping point, emergency lighting, the public address system and the other items defined in this TSI work together to improve safety in tunnels.

The additional stipulations of this requirement are gathered together in a specific paragraph. They are only envisaged for rolling stock that is regularly used through very long tunnels having specific demands listed in the ‘infrastructure register’.

The relevant characteristics to validate in respect of this TSI are defined in Sections 4.3.14 and 4.2.12.