People Are Asking “WTF Is This” And Obviously Internet People Came To The Rescue

Circles On The Bus Window

Circles-On-Window-Of-A-Bus-54397.jpg

You probably have seen these thousands of times on the bus. It’s not for decoration — the black band is called a frit. They prevent ultraviolet rays from deteriorating the window sealant. Since it’s black, it heats up faster than the rest of the glass when it’s being manufactured.