Crossing question

[Marcus Marcusson]

Is this kind of railway crossing, where the wheels are running on the
flanges, common in other countries? Here in Sweden it's quite rare,
though it can be seen now and then in industrial environments as in this
retired example.

http://mac.abc.se/~pictor/RAIL/korsning.html

/M
--
SUBLIMITETSAKADEMIEN
http://www.abc.se/~m10901/

[Special Agent Melvin Purvis]

On Jun 3, 12:25�pm, Marcus Marcusson <marcuspictorNOS...@gmail.com>
wrote:

In the USA it was common for streetcar lines in the last century.

Streetcars also commonly used curved frogs at switches, whereas steam
roads used straight frogs.

[Damon Hill]

Marcus Marcusson <marcuspic...@gmail.com> wrote in
news:h06ind$80n$2...@oden.abc.se:

> Is this kind of railway crossing, where the wheels are running on the
> flanges, common in other countries? Here in Sweden it's quite rare,
> though it can be seen now and then in industrial environments as in this
> retired example.
>
> http://mac.abc.se/~pictor/RAIL/korsning.html

Current practice is experimental, sort of, with the high speed
rail passing right through without a flange gap so that impact
wear is eliminated. The crossing track has the flange riding
up and over right on the rail head, so it's a straight-line
and slow speed movement. I've only seen them in pictures so
I gather they're currently very rare. In this case, it might be
to reduce noise as well.

Seems like I've read about low speed switches that do essentially
the same thing for the branching movement. Again, the idea is
to eliminate the flange gap and impact wear, but it means a slow
and bumpy ride for the engine and cars taking that siding.

I've yet to personally see an instance of a movable frog; I
think those are used only on very high speed tracks.

--Damon