Track gauges

spacing of the rails on a railway track

The Breitspurbahn (, ) was a railway system planned and partly surveyed by Nazi Germany. Its track gauge – the distance between the two running rails – was to be , more than twice that of the standard gauge used in western Europe. The railway was intended initially to run between major cities of the Greater Germanic Reich (the regime's expanded Germany) and neighbouring states.

distance across between the wheels of a vehicle

system to allow railway vehicles to travel across a break of gauge

change of rail tracks or rail vehicles to a different gauge

railway car designed to carry another railway car

Wikimedia list article

effects created when rail tracks of differing gauges meet

system for operating railway wagons on two or more gauges by switching bogies