# Geneva Conventions Act 1957, Paragraph 2


The radio message preceded by the urgency and distinctive signals mentioned in paragraph 1 shall be transmitted in English at appropriate intervals on a frequency or frequencies specified for this purpose in the Radio Regulations, and shall convey the following data relating to the medical transports concerned:
(a) call sign or other recognised means of identification;
(b) position;
(c) number and type of vehicles;
(d) intended route;
(e) estimated time en route and of departure and arrival, as appropriate;
(f) any other information, such as flight altitude, guarded radio frequencies, languages used and secondary surveillance radar modes and codes.

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Source: https://www.legislation.gov.uk/ukpga/Eliz2/5-6/52/schedule/FIFTH/part/VI/chapter/22/paragraph/2 (the official version)
Page: https://openlegislation.uk/geneva-conventions-act-1957/schedule-FIFTH/part-VI/chapter-22/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.