For quite some time I've been wondering why most of the time (because I think it is not all the time) aircrafts taxi on the left side on two way and/or parallel taxiways? I imagine taxing in an aircraft has nothing to do with traffic rules, but at least in this side of the world we're used to drive on the right lane.
This picture reminded me to ask the question, but I've also noticed it when flying myself.
Is there any rule or it all depends on the ATC, active runways, etc?
[Edited 2009-04-27 03:40:20]