• Tunnel lights

  • Discussion about railroad topics everywhere outside of Canada and the United States.
Discussion about railroad topics everywhere outside of Canada and the United States.

Moderators: Komachi, David Benton

  by flexliner
 
Rode Trenitalia quite a bit a few years ago
And also watch RFW videos from Italy
Why does it seem that (compared to at least the NY metro area) all the tunnels are incredibly dark and the trains seem to not use headlights?
  by JayBee
 
flexliner wrote: Sat Dec 02, 2023 10:47 am Rode Trenitalia quite a bit a few years ago
And also watch RFW videos from Italy
Why does it seem that (compared to at least the NY metro area) all the tunnels are incredibly dark and the trains seem to not use headlights?
Because most tunnels are not lighted, and videographers don't change the camera's aperture settings to avoid the "Burn Out" upon leaving the tunnel.

If you are interested in Italian Cab Ride videos may I suggest tgtrains1 channel on YouTube
https://www.youtube.com/@tgtrains1/videos
  by flexliner
 
That’s what I was wondering
Why are most tunnels not lit
And why don’t engineers use headlights?
  by RandallW
 
Tunnel lighting that is continuous over a long distance can be hypnotic and is therefor considered a safety hazard, so in long tunnels, you *don't want* tunnels to be lit. This is also why high speed trains have such small windows compared to slower trains--the smaller windows prevent the driver's view outside the train from extending to the periphery of their vision, reducing the risk from lights in tunnels. In videos I've watched (mostly on Lorirocks777's Youtube channel), it's clear that at least French and Swiss train drivers will brighten or dim headlights as needed to avoid blinding drivers of oncoming trains, and I don't recall any trains without headlights, but it also seems that some cameras just struggle outside of daylight regardless of lighting in the tunnels.
  by flexliner
 
RandallW thanks for the explanation
Interesting that in the US some newer tunnels are lit almost as brightly as stations
Example on some videos of LIRR departing their Grand Central Terminal to queens