To avoid the train to plummet out the bridge in case of derailment. If the train derails, one of the wheels will get stuck between the running and the inner rails and try to keep it in a straight line.
This. They're called check rails and depending on the spacing they can also make it harder to become derailed in the first place.
Ho! Tornio-Haaparanda -bridge ;)
As far as I know, the real reason for the existence of that connection is the Rautaruukki steel mill in Tornio, that uses raw ore from northern Swedish mines. The transshipment traffic is minuscale in comparison to that.
That thing looks like it belongs in Russia.
Maybe, but it is a Swede; a Y6-class railbus.https://en.wikipedia.org/wiki/SJ_Y6
Not really. It has pretty Swedish design. All that roundness and soft pastel colors.
In the Soviet Union I believe locomotives were mostly poison green ammoboxes on wheels designs by that time. They digged their industrial green pretty much.
These locomotives looked more cheerful in soviet red and yellow.
More like Czechoslovakia or Hungary.