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  • 7 Posts
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Joined 3 years ago
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Cake day: March 14th, 2023

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  • From my North American engineering perspective:

    The main thing is that when you look at a new transit project in isolation, the cheapest thing to design and build is a transit system that interacts with as few existing parts as possible. There are plenty of exceptions to this, such as using an existing rail tunnel through a mountain vs. digging a new one, or if an existing maintenance facility has enough spare capacity to avoid needing to build a new one. But in every place the new line interacts with existing infrastructure, it’s a cost to determine how the design can best integrate it both during and after construction. Take an interchange station with another line. Will it go beside, above, underneath? Can it be made without needing the close the station or the entire line, or with as little disruption to existing service as possible? Interchange stations are great for usability, but planners and design bidders evaluate and present cost-to-benefit tradeoff scenarios that will get approved or denied for both fiscal and political reasons. Let’s say between two distinct lines you want to have shared track. If the electrification type, rail gauge, signalling system, platform length, vehicle profile, boarding level height are different, you will have to spend a solid amount of engineering effort figuring out how to harmonize it.

    There are many examples of light rail vehicles using track or right-of-way shared with heavy rail in full or partial sections of the line. Waterloo, Canada’s ION tram is one. Unfortunately it’s much more difficult and costly to have it the other way around-- i.e. heavy rail vehicles on light rail tracks. The tracks and roadbed are not meant to handle the weight and vehicles may not make it through the smaller bridges tunnels, and curves. To make a light rail system compatible without knowing what heavy rail trains would use it, is a major cost incurred for no forseeable benefit.


  • di copypasta

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  • I watched it yesterday and only a couple things I have to add.

    First is that the bipartisan CHIPS act basically shovelled taxpayer money into Micron’s pockets to increase their manufacturing, but they are reducing their consumer output anyway, so Steve’s point is consumers are not getting anything out of the subsidy they made.

    Second is, since any potential increase in production is to cater to their largest data centre customers only, Steve is suggesting that this could be part of a push to move people to subscription-based cloud computing by making personal computing tha you buy and own unaffordable.








  • I went in January, cold but nothing I’m unaccustomed to as a Canadian.

    Clam chowder was decent at least what I tried. Public transit was usable. People were nice there in your typical American sense, but NYC shops had more heart for strangers and visitors comparatively. But I was only able to really scratch the surface from my day trip there.


  • Well we can assume political discussions have a lot of psyops and people with agendas. I appreciate that many of the loudest voices/posters make it very obvious ;)

    Some of the craziest niches aren’t on here (like if you clean sewers and septic tanks, DM me, you ought to do an AMA) but I have encountered people replying on mostly tech related topics on programming, linux, asklemmy, no stupid Qs where someone with niche tech knowledge did answer (i couldn’t find the original comment link, sorry). My knowledge is in trains, electricity, Japanese and Japanese electric trains, you can ask me about.




  • Hello, and welcone to Lemmy. Glad you made it, here’s my overall advice:

    • No need to get hung up over a few early downvotes on your comment that might cause its score to go negative for a bit. People can be strongly opinionated here. Not everyone agrees with me on this, but I do appreciate people willing to post honestly held unpopular opinions and play a reasonable devil’s advocate in threads. (This is different than just being a contrarian.)
    • For your own and everyone’s benefit, try to engage in thoughtful, well reasoned and good faith discussion with empathy for others where it’s due. If you feel like a chain of replies is going nowhere good, there’s no shame in walking away from it.
    • Report and block the jerks, trolls and spammers you might encounter like on any forum-like site. Don’t let them spoil your experience when most people here are respectful.

    Enjoy your time here!