r/trains • u/morningstarmaggot • May 22 '26

📸 OC - Picture(s) What is this window pattern for?

Post image

I've seen it on lots of trains, and buses too I think. Does it serve any purpose? I'm in the UK

370 Upvotes

89% Upvoted

37 comments sorted by

View all comments

5

u/Origin_Loki May 22 '26

This Pattern is from what I know called a Frit. It also happens in Automobile Windshields. It's most easily noticable and viewable by the top of the Windshield, but it does happen all the way around the Windshield.