# Level Crossing (Lissue) Order (Northern Ireland) 2010, Paragraph 7


Two electric lamps, or equivalent (light emitting diodes) each of not less than 5 watts nominal rating and with lenses of not less than 50mm diameter, shall be fitted to each barrier, one within 150mm of its tip, and the other one near its centre. When illuminated, the lamps shall show a red light in each direction along the carriageway.

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Source: https://www.legislation.gov.uk/nisr/2010/419/schedule/1/paragraph/7 (the official version)
Page: https://openlegislation.uk/level-crossing-lissue-order-northern-ireland-2010/schedule-1/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.