[Tagging] railway=rail vs. railway=subway

Bill Ricker bill.n1vux at gmail.com
Wed Nov 23 00:10:39 UTC 2016

> . But if the tracks can
> only be used by metro trains, they should be tagged railway=subway.
> Metro tunnels are usually more narrow than tunnels for full sized
> passenger trains because building wide tunnels is more expensive.

> railway=subway are usually encapsulated systems which may have a
> connecting track if new vehicles are delivered and both systems have the
> same gauge. railway=subway systems don't have level crossings.

Oh really. Boston MBTA green line is a subway line that extends onto
surface streets. Not full rail gauge iirc (though other lines are) and
neither surface or tunnel curves could handle freight cars. The surface
trolley portions that run down boulevard median are direct line extensions
of the tunnel line but do have grade crossings at boulevard stoplights.
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