The primary purpose of the three black lines, called rub rails, on the side of a school bus is to add structure and support to the vehicle. The general positioning of these stripes may line up ...

And while buses have changed a lot on the inside—those side-facing benches became front-facing, for one thing—the exterior of the American school bus has remained much the same since 1939.

He also used roll-up canvas side curtains for windows. Soon, ... As per a report by American School Bus Council, there are now around 480,000 school buses operating in the U.S.

The black lines you see on school buses are called rub rails, and despite what many may think, they aren't there just for ...