It’s the etceteras you really have to watch out for.
Hold on to your hats when crossing railway bridges ?
Women can dance the samba on the pedestrian crossing.
Kids kicking the stuffing out of triangles.
A warning to people in wheel-chairs ? Or to alligators (wheel-chairs being hard to digest) ? Or to vehicles trying to drive through in-between.
When wet, the wheels on the left-hand side may end up on the right-hand side.
All pictures from Icons, Taschen