This updated version of the Apron Markings and Signs Handbook includes best practices for the application and maintenance of paint markings on aprons, promoting the commonality of markings worldwide and the increasing acceptance and application of these practices, leading to a safer apron environment. These markings and signs supplement those provided in ICAO Annex 14, Volume I, and the ICAO Aerodrome Design Manual, Part 4 (Visual Aids). This is resource is available from the ACI store for $180 for members and $1,000 for non-members.