A Vacuum brake is a continuous train brake that is a fail-safe in operation. It is powered by a vacuum from the locomotive, but the application is actually by atmospheric pressure when the vacuum is released. The vacuum brake is now largely superseded by the air brake.
I have NO #RailArt for the letter V unless you count the last one that kind of looks like a V, but I’m not sure what it actually says, so we’ll just go with that. 😀
Interesting. I’m surprised you don’t have a V rail art with all the photos you have!
Me too! I looked and looked and the closet I came was that last one 🙁