Colour of light emitted by signalling equipment. Includes performance requirements for plastics filters and a new method of presentation of data for both glass and plastics filters.Cross References:BS 2782BS 4432:Part 1BS 4618:Section 4.2BS 4727:Part 4CIE 2.2CIE 1931ICAO Doc 9051IALA Recommendations for the colours of light signals on aids to navigation, 1977ICAO Convention on international civil aviation, Annex 1476/759/EEC76/761/EEC76/762/EEC77/538/EEC77/539/EECIMCO Final act of the international conference on revision of the international regulations for preventing collisions at sea, 1972ECE European code for inland waterways (CEVNI), 1968BCAR Section DBCAR Section KBCAR Section GFAR Part 25FAR Part 23FAR Part 27FAR Part 29Replaces BS 1376:1953.