Apron Markings Signs Handbook Guide

For taxiways serving code letters A, B, C, or D aircraft, the mandatory instruction marking may be surface-painted. This surface-painted holding position sign features a red background with white characters and is located across the taxiway equally placed about the taxiway centerline on the holding side of the runway-holding position marking.

The handbook categorizes visual aids into specific colors and styles to convey immediate meaning to pilots and ground crew:

Specifically colored circles (often red or yellow) indicating the location of underground fuel pits. Apron Markings Signs Handbook

The , primarily published by the Airports Council International (ACI) , is the global authority on standardizing the visual aids used in aircraft parking areas.

Assist the pilot in aligning the aircraft precisely along the centerline of the stand, minimizing the risk of asymmetrical wingtip clearance. For taxiways serving code letters A, B, C,

The third edition of the handbook, published in 2017, is the most comprehensive to date. It is divided into sections that provide a systematic guide to designing, applying, and maintaining apron markings:

The "Lead-In Line." These are curved yellow lines guiding the nose wheel of an aircraft into the precise parking spot. Pilots are trained to keep the line centered over the nose gear. If the line stops, the aircraft has reached the "Stop Position." The , primarily published by the Airports Council

Designated boxes painted with dashed white lines where GSE can be temporarily parked while waiting for an assigned aircraft.

The Third Edition (2017) of the Apron Markings and Signs Handbook

Beyond what the markings look like, the handbook outlines how to keep them functional:

GSE lines are typically solid white or red boundaries painted on the pavement. They delineate zones where ground handling equipment—such as baggage loaders, fuel trucks, and catering carts—must be parked when not in use. Keeping equipment inside these lines prevents it from obstructing taxiing aircraft. 5. Equipment Restraint Lines