# Road Vehicles Lighting Regulations (Northern Ireland) 2000, Paragraph 2

Extent: N.I.

Any variation in a dimension (other than as to the height of a letter) specified in any of the above diagrams shall be treated as permitted for the purposes of this Schedule if the variation—
(a) in the case of a dimension so specified as 250 mm or as over 250 mm does not exceed 2.5 per cent. of that dimension;
(b) in the case of a dimension so specified as 40 mm or as over 40 mm but as under 250 mm does not exceed 5 per cent. of that dimension; or
(c) in the case of a dimension so specified as under 40 mm does not exceed 10 per cent. of that dimension.

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Source: https://www.legislation.gov.uk/nisr/2000/169/schedule/19/part/4/paragraph/2 (the official version)
Page: https://openlegislation.uk/road-vehicles-lighting-regulations-northern-ireland-2000/schedule-19/part-4/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.