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The next video in my feed explained a more complete rehab, including replacement of the sleepers (ties) and rails while allowing the adjacent track to stay in s

The next video in my feed explained a more complete rehab, including replacement of the sleepers (ties) and rails while allowing the adjacent track to stay in service. F’n amazing. https://youtu.be/7zsyMxRnQ68 https://youtu.be/7zsyMxRnQ68

fdomig 3y ago
Awesome. I didn't expect my country to appear as an example for such an engineering masterpiece. Thanks for sharing.
qingcharles 3y ago
Unreal. I was stood on the platform two days ago wondering why tracks have ballast and how it was kept so clean, and today I'm watching the most incredible process and machinery that answers my question. I have a totally new respect for train tracks now.
- WastingMyTime89 3y ago
  I worked for different parts of the national railway company of my country (France) for four years (circulations management and scheduling mostly - briefly on a CBTC system and the first studies on autonomous driving). It’s hard to understand how complicated it is to keep trains running if you haven’t experienced it.
  - rkagerer 3y ago
    I wonder how that will compare to keeping Starships running to/from Mars.
    - red-iron-pine 3y ago
      Aviation and Space has a lot of challenges, but also a lot of flexibility. Planes, for example, can share the same geographic location -- just at different altitudes; e.g. 25000 ft vs 33000 ft vs 45000 ft., etc. After a certain altitude there isn't anything. No clouds, no birds, just air; set your auto-pilot and go. Takeoff and Landing can be hairy, and you gotta worry about mountains, but that's about it. A basic radar makes it easy to see, and not hard to broadcast by radio. Same basic idea for space. Gotta get out of orbit and not get cooked by radiation, but otherwise there is a whole lotta empty, and it's not hard to see what's going on with things like radar. On the ground it ain't so simple. Someone stuck on a rail, avalances, bridge collapses, hills vs inclines, snow / ice / rain / high-winds, and no ability to multiplex, so scheduling gets even harder since there are only so many ways into or out of a location. Trains full of high explosives or toxic chems drive right through downtown areas, often multiple times a day. From a crime and security perspective, airports are locked down pretty hard, while most people could probably just drive to a siding near them and fuck around; you can derail a train with a $400 block of steel you can order online. Communication and signal loss is also way more complicated, esp. if you're going through a mountainous or remote area.
geophph 3y ago
What a great rabbit hole. Thanks for sharing!

fdomig 3y ago

Awesome. I didn't expect my country to appear as an example for such an engineering masterpiece. Thanks for sharing.

qingcharles 3y ago

Unreal. I was stood on the platform two days ago wondering why tracks have ballast and how it was kept so clean, and today I'm watching the most incredible process and machinery that answers my question. I have a totally new respect for train tracks now.

WastingMyTime89 3y ago
I worked for different parts of the national railway company of my country (France) for four years (circulations management and scheduling mostly - briefly on a CBTC system and the first studies on autonomous driving). It’s hard to understand how complicated it is to keep trains running if you haven’t experienced it.
- rkagerer 3y ago
  I wonder how that will compare to keeping Starships running to/from Mars.
  - red-iron-pine 3y ago
    Aviation and Space has a lot of challenges, but also a lot of flexibility. Planes, for example, can share the same geographic location -- just at different altitudes; e.g. 25000 ft vs 33000 ft vs 45000 ft., etc. After a certain altitude there isn't anything. No clouds, no birds, just air; set your auto-pilot and go. Takeoff and Landing can be hairy, and you gotta worry about mountains, but that's about it. A basic radar makes it easy to see, and not hard to broadcast by radio. Same basic idea for space. Gotta get out of orbit and not get cooked by radiation, but otherwise there is a whole lotta empty, and it's not hard to see what's going on with things like radar. On the ground it ain't so simple. Someone stuck on a rail, avalances, bridge collapses, hills vs inclines, snow / ice / rain / high-winds, and no ability to multiplex, so scheduling gets even harder since there are only so many ways into or out of a location. Trains full of high explosives or toxic chems drive right through downtown areas, often multiple times a day. From a crime and security perspective, airports are locked down pretty hard, while most people could probably just drive to a siding near them and fuck around; you can derail a train with a $400 block of steel you can order online. Communication and signal loss is also way more complicated, esp. if you're going through a mountainous or remote area.

geophph 3y ago

What a great rabbit hole. Thanks for sharing!