Signs Stating the Obvious

Campaigners for the English language have attacked a growing tendency for "obvious" public information posters, such as a police sign urging people: "Don't Commit Crime."
Other examples highlighted by the Plain English Campaign, which fights for the effective use of English, include "Warning: Platform ends here" on the end of rail station platforms, and "May cause drowsiness" on sleeping pills.
Language defenders take aim at signs stating the obvious