# Level Crossing (Lissue) Order (Northern Ireland) 2010, Paragraph 22


Two independent power supplies shall be provided at the crossing, one of which may consist of standby batteries of sufficient capacity to operate the whole installation for 12 hours.

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Source: https://www.legislation.gov.uk/nisr/2010/419/schedule/1/paragraph/22 (the official version)
Page: https://openlegislation.uk/level-crossing-lissue-order-northern-ireland-2010/schedule-1/paragraph-22
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.