Shed, history is against you. A parallel taxiway will be built sooner or later. Why? Because that runway will be used more frequently as the airport grows and will eventually have ILS at both ends. History has shown that every restriction the airport has had imposed or imposed on itself has eventually been overturned.
There will also come a time when parallel approaches and take offs will become routine as they are at many airports in the US, for example, with distances between centre lines less than the 1035 metres which has been the UK norm, SFO for instance operating with 750 feet centre line separation in VFR conditions, not to mention its parallel approach, parallel departure system being at 90 degrees to each other.
Last edited by philbky; 28th Jul 2016 at 23:46.