# The Road Traffic (Carriage of Explosives) Regulations 1989, Paragraph 7


In the case of a vehicle carrying explosives of different Compatibility Groups, no Compatibility Group letter shall be written on the placards.

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Source: https://www.legislation.gov.uk/uksi/1989/615/schedule/4/paragraph/7 (the official version)
Page: https://openlegislation.uk/road-traffic-carriage-of-explosives-regulations-1989/schedule-4/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.