Friday, November 19, 2010 9:03:00 AM
Obvious safety note: don't mess with the sign when it has an important message (like the ice warning). But there are plenty of times when these signs are left in place with no message at all, or with a routine reminder to use seatbelts. No reason not to try to put up a more interesting message at such times. Unless you`re worried about being caught in the act, of course.