All traffic-control devices including signs, signals and markings (pavement and/or curb) installed or used for the purpose of directing and controlling traffic within the city shall conform with the manual and specifications adopted by the state transportation commission as provided in V.T.C.A., Transportation Code, section 544.001. All signs, signals and markings erected or used by the city must conform to the manual and specifications adopted under V.T.C.A., Transportation Code, section 544.001. All existing traffic control devices and those erected in the future by the city being consistent with the manual and specifications, state law and this section shall be official traffic-control devices.
(Ordinance adopting Code)
The driver of any vehicle, motor vehicle or animal shall obey the instructions of any official traffic-control device, sign, signal or marking applicable thereto placed in accordance with this article, unless otherwise directed by a police officer, subject to the exceptions granted the driver of an authorized emergency vehicle permitted by this chapter.
(2001 Code, sec. 12.102)
(a) 
No person shall place, maintain, or display upon or in view of any highway, street or alley 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 any official control device or any railroad sign or signal.
(b) 
No person shall place or maintain nor shall any public authority permit upon any highway, street or alley any traffic sign or signal bearing thereon any commercial advertising.
(c) 
This article shall not be deemed to prohibit the erection upon private property adjacent to highways, streets or alleys 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 chief of police is hereby empowered to remove the same or cause it to be removed without notice.
(2001 Code, sec. 12.103)
No person shall without lawful authority attempt to or in fact alter, deface, injure, knock down or remove any official traffic-control device, sign or signal or any railroad sign or signal or any inscription, shield, or insignia thereon, or any part thereof.
(2001 Code, sec. 12.104)
(a) 
The city council shall by ordinance direct that the utility superintendent shall have the duty of erecting or installing upon, over, along, or beside any street or alley signs, signals and markings, or causing the same to be erected, installed or placed, in accordance with this article and consistent with the manual. Said traffic-control devices shall be installed immediately, or as soon as the specific device, sign or signal can be procured.
(b) 
Whenever the utility superintendent has erected and installed any official traffic-control device, signal or sign at any location in the city, or has caused the same to be done under his or her direction, in obedience to this article and the manual, he or she shall thereafter file a report with the city secretary in writing stating the type of traffic-control device, sign or signal, and when and where the same was erected and installed. The city secretary shall file and maintain such report among the official papers of the office of the city secretary.
(2001 Code, sec. 12.105)
It shall be proof, in any prosecution for a violation of this article or any traffic ordinance of the city, that any traffic-control device, sign, signal or marking was actually in place on any street shall constitute prima facie evidence that the same was installed by the utility superintendent pursuant to the authority of this article and of the ordinance directing the installation of such device, signal or marking since it is unlawful for any person other than the utility superintendent, acting pursuant to an ordinance of the city, to install or cause to be installed any signal, sign or device purporting to direct the use of the streets or the activities on those streets of pedestrians, vehicles, motor vehicles, or animals.
(2001 Code, sec. 12.106)