# 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 2.2: Horizontal signing

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

Horizontal delineation should be used at the roadside edge.
In the case of bi-directional tunnels, clearly visible means should be used along the median line (single or twin) separating the two directions.

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Source: https://www.legislation.gov.uk/eudr/2004/54/annex/III/division/2.2 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-54/annex-III/division-2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.