# What do taxiway lane, taxiway strip and taxiway shoulder mean?

I am developing a game which involves an airport simulation. And I am looking into the general rules that traffic control has for busy airports and am also confused on the terminology of a taxiway.

According to ICAO taxiway widths have 3 types of labeling which is as follows:

Taxiway Lane
Taxiway Strip
Taxiway Shoulder


What is the taxiway shoulder? I am fairly sure the lane is the 2 outer yellow lines from the center taxiway line right? And the strip is the entire taxiway width, but I am unclear on the shoulder label? I could not find an image that showed what this was.

• Your last paragraph should be a separate question, if this similar question doesn't cover it. – fooot Jan 15 '15 at 3:43
• @fooot i'm not sure it does answer it, it doesn't explain which gets priority - the departing plane from jetways etc or the plane already on the move on the taxiways. Unless theres no logical priority and is decided in the moment by traffic control. – Dave Jan 15 '15 at 3:45
• Priority is usually given to aircraft ready to taxi, before other aircraft are cleared for pushback. This might be overruled by slot assignments, if the plane pushing back has a significantly earlier slot to make and would need to be sequenced in front of the other aircraft anyway. Too many factors to logically disseminate this. – SentryRaven Jan 15 '15 at 6:46
• @Dave I've trimmed your second question about pushback priority because none of the answers below really address it, and it should be a logically separate question anyway. If you ask it as a separate question we can try to get you some answers :) – voretaq7 Jan 15 '15 at 16:43

According to the Skybrary from EUROCONTROL and a UK CAA document on taxiways markings (Visual Aids Handbook UK CAA CAP 637 (2007)), the definitions are:

Taxiway Strip

An area which contains the taxiway and gives protection to aircraft from obstacles and other taxiways.