# Directive 2004/54/EC of the European Parliament and of the Council of 29 April 2004 on minimum safety requirements for tunnels in the trans-European road network, Division 2.1.2

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

In any case, where, for tunnels at the design stage, a 15-year forecast shows that the traffic volume will exceed 10 000 vehicles per day per lane, a twin-tube tunnel with unidirectional traffic shall be in place at the time when this value will be exceeded.

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Source: https://www.legislation.gov.uk/eudr/2004/54/annex/I/division/2.1.2 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-54/annex-I/division-2.1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.