this post was submitted on 07 Aug 2023
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Even if you think what you would say is obvious, please add. This is genuinely something I think makes sense regarding local bus routes given the longevity of light rail and how infrequently routes change, but I also suffer from confirmation bias, so I'm hoping for reasons this would be a terrible idea but obviously would prefer reasons it would be an even more amazing idea than I thought.

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[–] [email protected] 34 points 1 year ago (13 children)

Light rail is infinitely more expensive to construct and it only takes one delay/accident and all subsequent trains after cause a log jam...vs a bus which can route around it.

A better solution uses corridors dedicated to buses that are electric powered.

Something like this was done in Colombia with these routes being connected by ground hubs, similar to subway stations.

[–] [email protected] 22 points 1 year ago* (last edited 1 year ago) (1 children)

That’s like saying a ship is more expensive than a car. It depends.

A tram is not „infinitely“ (what absurd statement is that anyway) more expensive than a bus.

Construction cost is not everything, and they’re not even that much higher, you also need to consider service life (much longer with trains), energy cost per passenger mile (much lower with trains thanks to the lower resistance), etc.

What is best is always depending on the specific circumstances.

The biggest limitation of buses is capacity, and a highly used tram is cheaper per passenger mile than a bus. Try replacing the S-Bahn in Berlin with BRT, see how far that gets you. You’d probably need to bulldoze a new highway… speaking of which:

Germany is actually hellbent on building a highway right through its capital Berlin, which currently clocks in at 700 milion € for 3.2 km. I expect the whole thing to end at ~2 bn € for ~7 km.

So I think the costs of public transport are really not the issue people should be focusing on.

[–] [email protected] 1 points 1 year ago

You wouldn't even have to go for the "replacing the S-Bahn" to show how ludicrous a BRT is as a suggestion, unless you're not paying the constructors and drivers a living wage, which is why it makes sense in say Colombia and not in Germany...just think about replacing the M-lines of Berlin tramways with a BRT. It would have to be couple meters wider, would be terribly unreliable and inefficient, not to speak of noisy and bumpy. Now who would want to have that? Not to mention how much the upkeep of two lanes of dedicated BRT costs vs. maintenance of steel on steel rails and catenary. (Most of the time you'd find the latter to be cheaper.) In Helsinki, Finland we are currently waiting for a new tram/light rail option to replace a bus service that should have been a modern tram/light rail line in the first place: https://raidejokeri.info/en/ In the neighbour municipality Vantaa some parties were trying to push for a BRT option but the independent research suggested light rail/tram option to be the best and this is what was chosen: https://www.vantaa.fi/en/housing-and-environment/traffic-and-transport/vantaa-light-rail (they call it light rail but in some ways it's also reasonable to call it a tram)

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