this post was submitted on 13 Aug 2024
265 points (97.8% liked)
Technology
58115 readers
3920 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
They must not be counting light rail which is electric.
https://en.m.wikipedia.org/wiki/Light_rail_in_the_United_States
"The United States, with its 27 systems (as counted by the Light Rail Transit Association), has a much larger number of "true" light rail systems (not including streetcar systems), by far, compared to any other country in the world (the next largest are Germany with 10 and Japan with 9).[1]
According to the American Public Transportation Association, of the roughly 30 cities with light rail systems in the United States, the light rail systems in six of them (Boston, Los Angeles, Philadelphia, Portland (Oregon), San Diego, and San Francisco) achieve more than 30 million unlinked passenger transits per year.[2]"
The problem with light rail here is excessive heat makes the overhead wire expand and when that happens, it sags causing the trains to have to slow down. :(
In the winter, the problem is snow and ice blocking the lines and the switches.
In Portland, the biggest problem light rail has are assholes parking on the tracks.
Or driving in front of the train!
Just hit the damn car. You're a god damned TRAIN!!! CHOO CHOO MOTHERFUCKER!!!
It's like Paul Heyman told Taz. "If anybody gets in your way, get em' outta your way!"
Sounds like the trains need a cow catcher to help clear the tracks.
Haha cowcatcher goes brrrrrrrrrrrr
Sounds like that should be assholes without cars
You’d think with current battery tech we wouldn’t need the overhead wire anymore.
Batteries are heavy and expensive. A wired power source is so much more efficient for rail it’s barely worth discussing.
And have a much shorter lifespan than catenary wire or third rail.
The best use of a battery on a train is a small one to handle junctions. You disconnect from the wire at the end of one set, go through the junction, and then reconnect at the other side. Saves a lot of ugly spaghetti wiring.
Otherwise, no, just use wires.
You don't even need that. Every electric train I know of has pickups on each car, and any break in the catenary or third rail is short enough that it can be bridged naturally by two cars, or sometimes even just one, if it has pickups at both ends.
Some electric trolleys aren't long enough to do that.
That would mean that instead of an engine, you're lugging around a battery pack, which is just as heavy while giving you a fraction of the range of an engine. Not to forget that battery cells have only a finite lifespan.
Meanwhile, OHLE gives you infinite range and room for major weight savings. Plus you can keep running the same power system for decades.
Battery and hydrogen-powered trains exist, they're mainly used on less frequented lines because it would be more expensive to electrify them.