Look at the sign in this old thread about Circle K
http://www.bayoushooter.com/forums/showpost.php?p=490219&postcount=10
I'm about 6'5" so I'm not going to put on my glasses and get on my knee's to read a damn sign with TN laws on them. I haven't been in TN since 1970 and don't plan on worrying about TN gun laws. Also look at the light colored spots on the cement looks like the trash cans are blocking the sign most of the time.
That's another reason I write to my representatives asking for a standardized sign to aid those of us who wish to comply with property owners' requests. Texas' 30.06 sign is a good standard by which we could learn.