# Geneva Conventions Act 1957, Paragraph 2


Protected medical transports may, for their identification and location, use standard aeronautical radar transponders and/or maritime search and rescue radar transponders.
It should be possible for protected medical transports to be identified by other vessels or aircraft equipped with secondary surveillance radar by means of a code transmitted by a radar transponder, e.g. in mode 3/A, fitted on the medical transports.
The code transmitted by the medical transport transponder should be assigned to that transport by the competent authorities and notified to all the Parties to the conflict.

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Source: https://www.legislation.gov.uk/ukpga/Eliz2/5-6/52/schedule/FIFTH/part/VI/chapter/23/paragraph/2 (the official version)
Page: https://openlegislation.uk/geneva-conventions-act-1957/schedule-FIFTH/part-VI/chapter-23/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.