# The Radioactive Material (Road Transport) (Great Britain) Regulations 1996, Paragraph 4: Marking


Each package which conforms to a Type B(U) or Type B(M) package design shall have the outside of the outermost receptacle which is resistant to the effects of fire and water plainly marked by embossing, stamping, or other means resistant to the effects of fire and water with the trefoil symbol shown in Fig. 1 in the Appendix below.

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Source: https://www.legislation.gov.uk/uksi/1996/1350/schedule/18/paragraph/4 (the official version)
Page: https://openlegislation.uk/radioactive-material-road-transport-great-britain-regulations-1996/schedule-18/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.