Myron Claridge said:
Vic, technology has advanced the gauge issue by Talgo and others using variable gauge technology by having rail trucks or bogies having variable wheels for both passenger and freight in Europe. It gets around the changing of trucks by lifting etc by having a unit that pushes the wheels out or in depending on the gauge. It is in operation in Spain, Poland/Ukraine and was proposed and may be in use for Germany and Russia…So the possibility of it being used to expand to all countries exists. It requires the train to go slowly through the gauge changer but is hours quicker than changing the trucks…
By the way, the Chinese are also suggesting the Bering Sea route to North America-an old idea from the 1890’s and even talked about in the 1990’s informally with Russia, Alaska/US and Canada…The Chinese have the technology and the money apparently…They are rather busy in building railways in Africa right now as well.
Myron
This is a link to the gauge changers that Myron is referring to;
http://www.vialibre-ffe.com/pdf/Track_gauge_changeover.pdf
It is impressive technology. And I did see that Russia has purchased Talgo sets from Spain.
http://www.railwaybulletin.com/2013/03/russian-federal-passenger-company-to-purchase-spanish-talgo-trains
Paul