Interesting. Why have a stop sign at all if it's not illegal to run it? What about on a public street, can you be ticketed for that?
According to state law
quote:(a) No person shall place, maintain, or display upon or in view of any highway any unauthorized sign, signal, marking, or device which purports to be or is an imitation of or resembles an official traffic-control device or railroad sign or signal, or which attempts to direct the movement of traffic, or which hides from view or interferes with the effectiveness of an official traffic-control device or any railroad sign or signal.
(b) No person shall place or maintain nor shall any public authority permit upon any highway any traffic sign or signal bearing thereon any commercial advertising.
(c) This section shall not be deemed to prohibit the erection upon private property adjacent to highways of signs giving useful directional information and of a type that cannot be mistaken for official signs.
(d) Every such prohibited sign, signal, or marking is hereby declared to be a public nuisance and the authority having jurisdiction over the highway is hereby empowered to remove the same or cause it to be removed without notice.
From a bit earlier in the code:
quote:Obedience to traffic-control devices; devices presumed to comply with requirements.
(a) The driver of any vehicle shall obey the instructions of any official traffic-control device applicable thereto placed in accordance with law, unless otherwise directed by a police officer, subject to the exceptions granted the driver of an authorized emergency vehicle in this chapter.
(b) No provision of this chapter for which official traffic-control devices are required shall be enforced against an alleged violator if at the time and place of the alleged violation an official device is not in proper position and sufficiently legible to be seen by an ordinarily observant person. Whenever a particular section does not state that official traffic-control devices are required, such section shall be effective even though no devices are erected or in place.
(c) Whenever official traffic-control devices are placed in position approximately conforming to the requirements of this chapter or other law, such devices shall be presumed to have been so placed by the official act or direction of lawful authority, unless the contrary shall be established by competent evidence.
Looks like Wal-Mart can't put a stop sign next to the road without having it declared a public nuisance, and one they place in the middle of the parking lot isn't legally enforceable.
On the other hand some people just wouldn't let pedestrians by without a stop sign, so there's ggod reason to have one there as a suggestion..