Quote:
Originally Posted by Nouvellecosse
If parts of it ran only every 15-20 min, I'd call it a frequent commuter/regional rail like the s-Bahn. Commuter/regional rail services can be very frequent and operate similarly to some LRT/Stadbahn services but they wouldn't be called such unless using tram-type rolling stock.
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I don't want to be super nitpicky or single you out, Nouvellecosse, but I've seen a few people misunderstand the S-Bahn and ended up talking past someone once about regional rail because of it.
In Germany, at least, the S-Bahn is a different level of service from regional rail.
Regional trains run at hourly frequencies or less, aren't always electrified, always run on different tracks from S-Bahns, and often aren't even opperated by Deutsche Bahn. They cast a wide net over provinces or regions; I could, for example, take a regional train from Berlin to just about anywhere in Brandenburg, including to Fankfurt on the Oder, and walk over to Poland.
S-Bahn frequency and level of service varies by the system. Leipzig's runs very far afield, at pretty low frequency. In Hamburg and Berlin S-Bahns are third-rail-powered, heavy-metro trains, essentially the same as U-Bahns but with wider stop spacing and, therefore, faster service over distance. The other bigger systems use catenary power but run at high frequency like metro rail.
The main difference is that the S-Bahn systems are focused on cities. Even in the Rhine-Ruhr Gebiet where a half-dozen cities run into each other, the S-Bahns aren't oriented towards moving people between those cities--that's what regional rail is for. It is possible to travel from Cologne to Dortmund by S-Bahn, but there's no need to; regional trains are faster.
Canada's metro systems are often already a lot like an S-Bahn. Toronto's Yonge-Spadina line has most stops over a kilometer apart, with service oriented towards bringing the suburbs to the city centre--it's comparable to a Berlin/Hamburg S-Bahn (the Bloor line is a sincere U-Bahn line). The Skytrain is like a futuristic S-Bahn with small trains. Montreal's REM will be an S-Bahn. Smart Track will provide Munich-like S-Bahn service for a small part of the city. GO RER will be something like an S-Bahn but with regional rail stop density.
Anyway, there's a whole lot of rail service possible before jumping into making a regional-metro hybrid like an S-Bahn. I've said before that I think Canada's one-size-fits all transit systems are worse than they should be. That they exist is a function of being so far behind on rail service--Germans spent decades upgrading regional lines to S-Bahn lines, they didn't need to jump up and build things from scratch. Still, most of Canada's midsized cities would be better served building regional rail (not anywhere close to S-Bahn service) and trams. KW, for example, could build new GO stations at the extreme east and west ends of the city, keep gradually building ION, in 20 years add some more GO stations in between, and only then bring the frequency up to S-Bahn service. That would make a very good transit system for a city of one million.