Definition
The physical layout and design of an airport's taxiway system, including the angles, intersections, widths, curves, and connections between taxiways and runways. Taxiway geometry affects how easily pilots can navigate the airport surface and is a key factor in identifying runway hotspots where confusion or wrong-runway events are more likely.
Plain English
The shape and arrangement of the taxiways at an airport — how they bend, cross, and join up with the runways. Some layouts are simple and clear; others are complicated and easy to get lost on.
Context Anchor
Seen in airport diagrams, hotspot descriptions, and ground movement planning before or during taxi.
Derivation
Geometry comes from the Greek geo- (earth) and -metria (measuring) — literally 'measuring the earth.' In this use, it refers to the shapes and angles that make up the taxiway layout on the airport surface.
Why Pilots Care
Unusual taxiway layouts at hotspots can cause pilots to lose situational awareness and enter active runways unintentionally.
Grounding Statement
On the ground, taxiway geometry is the airport’s road pattern for aircraft.
Intuition Check
Do not read “geometry” here as school math problems. Here it means the real shape and layout of taxiways on the airport.
Example Sentence 1
The briefing warned us about the taxiway geometry near the approach end of Runway 27, where two taxiways meet at a sharp angle and pilots often line up on the wrong one.
Example Sentence 2
Reviewing the taxiway geometry on the airport diagram prevented the crew from taking a wrong turn during low-visibility taxi.