The Italians have such a way with food, wine and yes, signs. This one got the message across with poignancy, a bit of humor and the unspoken caution to be grateful if you can easily walk from a parking place into the travel plaza. (Want my parking space? Take my handicap.)
And I have to include this one posted in a dog park near a church in Naples. Among the cautions forbidding the presence of sick dogs, dogs on leashes, dogs in the flowerbeds, dogs in your arms (huh?), and the command to pick up your dog’s cacca, my favorite was number 2 which forbids the presense of female dogs in heat. They think of everything, don’t they?