Get out and push.

There's a sign at the edge of my town that says "USE OF ENGINE BRAKES PROHIBITED" but it's printed in such a way that it looks like drivers can use neither the engine nor the brakes until they leave town.

Marcie, Leesburg, VA, USA

[If you look closely there is an alteration and it begs the question of whether the original sign said 'Use of engines brakes probihited' -Murray]

Stop slowly?

Take an international shape and colour combination, change two letters and what have you got? Confusion.

[Spotted at the intersection of Billy Conn Avenue and 5th Avenue, Pittsburgh, PA and contributed by Matthew H.]