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How Railroad Crossings Work (2024)

37 points by at1as 29d ago

cmiles8 29d ago
“Let me show you how this works in a real demonstration. On the left, I’ve hooked up a power supply to the tracks, putting a voltage between the two rails. On the right side, I’ve attached a relay.” The problem with publishing “articles” that are just the script from a video is that the reader doesn’t understand a bunch of what’s written because it’s talking about something not being shown. I like these videos, but if they’re going to be turned into articles at least put pictures and figures in or rewrite the text to stand on its own. Heck AI could probably fix that in a minute these days.
- MysteryTramp 29d ago
  I appreciate the script being there. I can quickly scan it and decide if the video is worth watching, or go to the part I am interested in. I skim podcast transcripts as well.
- gwbas1c 29d ago
  It's not an article. It's the video with the transcript below.
  - vorticalbox 29d ago
    I know it says that at the top but my brain completely skimmed that when I start reading.
- gumby 29d ago
  This is the only way I’ll refer to a video, so I hope it starts to happen. I know some people like them but personally I skip them, and skip HN submissions that are obviously links. Unfortunately this was was washed through a URL. TL;DR: IV;WW (It’s Video, Won’t Watch).
telesilla 29d ago
I can't remember the last time I crossed a train track in western europe - trams yes but not trains. Is this being engineered into bridges and tunnels in this part of the world or is this increasingly common. I suddenly feel very safe.
- mlaretallack 29d ago
  Loads of them in the UK. Especially in villages where it would be too expensive to install a bridge. Just look at the Southampton to Weymouth line.
- glitchcrab 29d ago
  There's two level crossings alone in my small UK town (~150k people)
- b3orn 29d ago
  I know about quite a few in Hamburg, Germany. Most level crossings are in the relatively low speed cargo rail system in the port, most of these only have traffic lights, but some don't even have that so you have to check if a train is coming and there were a few deadly collisions in the last few years. There aren't that many level crossings in the regular rail system in the city, but even there last year a deadly collision with a lorry happened.
- bluGill 29d ago
  Grade crossings exist all over - they are so much vastly cheaper than the alternative that other options are often not reasonable. There are many possible reasons you don't see them where you are anyway. I would guess that the reason you never cross them is that you rarely travel outside of cities. Within a city the population density makes the cost of not having a grade crossing (bridges are typically an order of magnitude more expensive) worth it. Often tracks converge into cities as well, so a grade crossing every half hour turns into the crossing closed more than open in a city thus splitting the city into parts: unacceptable. I've personally crossed train tracks at grade in Western Europe so I know the crossings exist (or did 15 years ago when I was last there...) Though the freight train network in Western Europe is terrible by world standards (for both good and bad reasons), and that is going to drag down your sample size.
robrain 29d ago
(2024). This week’s video is about stopping trains at the end of lines. The channel is always an interesting watch.
NuclearPM 29d ago
I used to be a railway signalling guy. AMA
- bell-cot 29d ago
  In what country? How much (if you know) do the details vary by country? If you were ever involved in a grade crossing fatality case, what was that like? (Professionally - not prying at your personal feelings. Answering optional.)
  - NuclearPM 28d ago
    Canada Same system as US. Similar operating rules. Other countries have different rules including track gauges (width). Canada’s: https://tc.canada.ca/en/rail-transportation/rules/2022-2023/canadian-rail-operating-rules https://tc.canada.ca/en/rail-transportation/rules/2022-2023/... “Fun” fact, the rules were metaphorically written and blood, and grew to include things like “don’t microwave your clothes to dry them”. Everyone who had worked in the rail industry (especially conductors and engineers) for more than a few years has horrible stories. PTSD is real. Suited by train is fucking selfish and disgusting.
- at1as 29d ago
  for how long were you in this career? How did your job change (if it all) during that time?
  - NuclearPM 28d ago
    Almost 10 years, split between apprentice, journeyman, supervisor, project manager. It’s an amazing job when young and you can see lots of remote beautiful locations. Very high divorce rate… Moved to Nuclear which is similar in that small mistakes can have catastrophic consequences. Nuclear has more layers of redundancy (technical and administrative). Railway has half the people doing 1.5 times the work as it did 30 years ago - nice profits though, Things changed when Hunter Harrison gutted/streamlined. https://en.wikipedia.org/wiki/E._Hunter_Harrison https://en.wikipedia.org/wiki/E._Hunter_Harrison
- 28d ago
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37 points by at1as 29d ago

“Let me show you how this works in a real demonstration. On the left, I’ve hooked up a power supply to the tracks, putting a voltage between the two rails. On the right side, I’ve attached a relay.” The problem with publishing “articles” that are just the script from a video is that the reader doesn’t understand a bunch of what’s written because it’s talking about something not being shown. I like these videos, but if they’re going to be turned into articles at least put pictures and figures in or rewrite the text to stand on its own. Heck AI could probably fix that in a minute these days.

MysteryTramp 29d ago
I appreciate the script being there. I can quickly scan it and decide if the video is worth watching, or go to the part I am interested in. I skim podcast transcripts as well.
gwbas1c 29d ago
It's not an article. It's the video with the transcript below.
- vorticalbox 29d ago
  I know it says that at the top but my brain completely skimmed that when I start reading.
gumby 29d ago
This is the only way I’ll refer to a video, so I hope it starts to happen. I know some people like them but personally I skip them, and skip HN submissions that are obviously links. Unfortunately this was was washed through a URL. TL;DR: IV;WW (It’s Video, Won’t Watch).

telesilla 29d ago

I can't remember the last time I crossed a train track in western europe - trams yes but not trains. Is this being engineered into bridges and tunnels in this part of the world or is this increasingly common. I suddenly feel very safe.

mlaretallack 29d ago
Loads of them in the UK. Especially in villages where it would be too expensive to install a bridge. Just look at the Southampton to Weymouth line.
glitchcrab 29d ago
There's two level crossings alone in my small UK town (~150k people)
b3orn 29d ago
I know about quite a few in Hamburg, Germany. Most level crossings are in the relatively low speed cargo rail system in the port, most of these only have traffic lights, but some don't even have that so you have to check if a train is coming and there were a few deadly collisions in the last few years. There aren't that many level crossings in the regular rail system in the city, but even there last year a deadly collision with a lorry happened.
bluGill 29d ago
Grade crossings exist all over - they are so much vastly cheaper than the alternative that other options are often not reasonable. There are many possible reasons you don't see them where you are anyway. I would guess that the reason you never cross them is that you rarely travel outside of cities. Within a city the population density makes the cost of not having a grade crossing (bridges are typically an order of magnitude more expensive) worth it. Often tracks converge into cities as well, so a grade crossing every half hour turns into the crossing closed more than open in a city thus splitting the city into parts: unacceptable. I've personally crossed train tracks at grade in Western Europe so I know the crossings exist (or did 15 years ago when I was last there...) Though the freight train network in Western Europe is terrible by world standards (for both good and bad reasons), and that is going to drag down your sample size.

robrain 29d ago

(2024). This week’s video is about stopping trains at the end of lines. The channel is always an interesting watch.

NuclearPM 29d ago

I used to be a railway signalling guy. AMA

bell-cot 29d ago
In what country? How much (if you know) do the details vary by country? If you were ever involved in a grade crossing fatality case, what was that like? (Professionally - not prying at your personal feelings. Answering optional.)
- NuclearPM 28d ago
  Canada Same system as US. Similar operating rules. Other countries have different rules including track gauges (width). Canada’s: https://tc.canada.ca/en/rail-transportation/rules/2022-2023/canadian-rail-operating-rules https://tc.canada.ca/en/rail-transportation/rules/2022-2023/... “Fun” fact, the rules were metaphorically written and blood, and grew to include things like “don’t microwave your clothes to dry them”. Everyone who had worked in the rail industry (especially conductors and engineers) for more than a few years has horrible stories. PTSD is real. Suited by train is fucking selfish and disgusting.
at1as 29d ago
for how long were you in this career? How did your job change (if it all) during that time?
- NuclearPM 28d ago
  Almost 10 years, split between apprentice, journeyman, supervisor, project manager. It’s an amazing job when young and you can see lots of remote beautiful locations. Very high divorce rate… Moved to Nuclear which is similar in that small mistakes can have catastrophic consequences. Nuclear has more layers of redundancy (technical and administrative). Railway has half the people doing 1.5 times the work as it did 30 years ago - nice profits though, Things changed when Hunter Harrison gutted/streamlined. https://en.wikipedia.org/wiki/E._Hunter_Harrison https://en.wikipedia.org/wiki/E._Hunter_Harrison
28d ago

deleted 29d ago

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deleted 29d ago

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