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According to ICAO Annex 14, when mobile objects are marked by colour, which colours should be used for emergency vehicles?
  • A
    Blue or red.
  • B
    Yellow or red.
  • C
    Blue or yellowish green.
  • D
    Red or yellowish green.

Refer to figure.
ICAO Annex 14
6.2.2 Mobile objects

Marking
6.2.2.1 All mobile objects to be marked shall be coloured or display flags.

Marking by colour
6.2.2.2 Recommendation — When mobile objects are marked by colour, a single conspicuous colour, preferably red or yellowish green for emergency vehicles and yellow for service vehicles, should be used.

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