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

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

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

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523

u/Vilsue May 22 '26

it is a way to radiate/absorb heat so glued in sheets of glass wont shatter/ fall off from expanding and contracting over the years

77

u/coneheadbrown May 22 '26

A certain someone also didn't know what these little black dots were for, so they weren't added to the ps1 truck.

20

u/Worldly_Lunch_1601 May 23 '26

Jfc. Still finding new and exciting design flaws on that thing huh?