Colour code or coding

A method of indicating differences by the use of different colours in a large number of situations. Examples include, flags used for signalling in shipping; traffic signals; railway signalling; pavement and street markings; safety warnings on machinery and equipment; warnings on vehicles carrying dangerous substance; directional indications; sizes of clothes; the wiring of electrical plugs and teaching children how to read. An interesting application has been adopted in Gwynnedd Hospital in Wales where bracelets of different colours are worn according to whether patients wish to speak Welsh, English or both. Using colour and colour coding is a powerful method of enhancing memory. See also colour wires, colour symbolism, compass colours and signal red.

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