The peevologists are at it again, this time in Preston. (Notice that the first person to reply to the article makes two spelling mistakes - Skitts Law in action.) Although we may not like it, councils are right to omit apostrophes from road and street signs. That way consistency lies.
Kill the Apostrophe goes too far, I think, in wanting an end to all of them, everywhere. The possessive apostrophe (John's) is unnecessary, but we probably need the omission apostrophe (we'll, don't).
Thanks to Grammar Girl for the heads-up, and to The Ridiculant for its take on this.