FetchYourNews.com recently spoke with the Georgia State Patrol regarding individuals who are placing illegal signage on State Roadways and on State Road Signs.
It is illegal and dangerous. Road signs are engineered to breakaway in a safe manner if a motorist loses control of a vehicle and hits a sign. If someone places another sign, such as a homemade sign, on the structure, it changes the engineering and becomes a hazard. If you put up a sign on the roadway or in the median and someone wrecks it could put you in a position of liability to be sued for their injuries and damages.
Georgia State Patrol wants to send the warning – if anyone is caught placing any signage on road signs or otherwise on the road illegally the law will be enforced with no exceptions. The idea is to keep the roads as safe as possible for travelers. Just because you have done so in the past doesn’t make it okay and violators will find themselves in trouble. If people have been warned and cited it may end up with an individual going to jail.
No one may place, maintain, or display on, or in view from any highway an unauthorized sign, signal, marking, or device that purports to be or is an imitation of or resembles any official traffic control device (such as a stop or slow sign) that attempts to direct traffic movement or that hides from view or interferes with the effectiveness of any official traffic control device or sign. No one may place or maintain, nor may any public authority permit, commercial advertising on any highway traffic sign or signal. The state or local traffic authority with jurisdiction over the highway may cause any prohibited sign, signal, or marking to be removed without notice as a public nuisance (CGS § 14-310).
See this link for additional info: Road Sign Laws