# The Road Vehicles Lighting Regulations 1989, Paragraph 2


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 250mm or as over 250mm does not exceed 2.5 per cent of that dimension;
(b) in the case of a dimension so specified as 40mm or as over 40mm but as under 250mm does not exceed 5 per cent of that dimension; or
(c) in the case of a dimension so specified as under 40mm does not exceed 10 per cent of that dimension.

---
Source: https://www.legislation.gov.uk/uksi/1989/1796/schedule/19/paragraph/2 (the official version)
Page: https://openlegislation.uk/road-vehicles-lighting-regulations-1989/schedule-19/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.