From OpenStreetMap Wiki
| aeroway = taxiway
|Where airplanes manouevre between runways and parking areas.|
|Used on these elements|
|Tools for this tag|
Where airplanes manouevre between runways and parking areas within an airport.
How to map
Draw a ways and add the aeroway=taxiway to it. Additional information can be specified using these keys:
|Reference||Use the ref= tag for the name of the taxiway.|
|Surface||The surface= tag can be used to identify the physical makeup of the surface of the taxiway. Example: "paved" or "grass".|
|A proposed taxiway which is very likely to be constructed. This tag should not be used for pure aspiration. Alternatively use proposed:aeroway=taxiway|
|A taxiway under construction. Alternatively use construction:aeroway=taxiway|
|In operation||aeroway=taxiway||An operational taxiway|
|A taxiway not in use, which could be brought back into operation. Alternatively use disused:aeroway=taxiway|
|Abandoned||abandoned:aeroway=taxiway||When it is unusable or has been reused. Alternatively use abandoned:aeroway=taxiway. For example abandoned:aeroway=taxiway + highway=cycleway|
See Munich International Airport for a reference.