All traffic-control devices, including signs, signals and markings on 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 for traffic-control devices adopted by the state transportation commission. 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.
(1990 Code, sec. 13-26; Ordinance adopting Code)
All lawfully erected traffic-control signs, signals, markings and devices in existence on the effective date of the adoption of this code are ratified and confirmed and continued in full force and effect until changed by order of the city council.
(Ordinance adopting Code)
It is unlawful for any person other than the city engineer and the police chief, 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, excluding speed control devices.
(1990 Code, sec. 13-28; Ordinance 98-18, sec. 1, 3/10/98; Ordinance 2002-50, sec. 1, 11/12/02)
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 city engineer and the police chief pursuant to the authority of this article and of the ordinance directing the installation of such device, signal or marking.
(1990 Code, sec. 13-29; Ordinance 98-18, sec. 1, 3/10/98; Ordinance 2002-50, sec. 1, 11/12/02)
In the event of construction on or adjacent to any street or highway, the city engineer or designated representative is authorized to conduct an engineering and traffic investigation to determine if the maximum lawful prima facie speed limit established by this code should be temporarily reduced in order to preserve and protect the public safety. If the city engineer determines that such speed limit should be reduced, they shall enter a written finding and order to that effect and, upon approval of that order in writing by the city manager or their designated representative, the city engineer or designee shall have the authority to erect temporary official traffic-control devices. These devices shall be erected in proper position and sufficiently legible to be seen by an ordinarily observant person prior to any enforcement action against an alleged violator. The finding and order of the city engineer and city manager or their designated representatives shall estimate the length of time for which such temporary speed limit shall be in effect and, if necessary, an additional order in writing shall be entered in the event it is necessary to extend such time. No such temporary speed limit shall be effective longer than is provided in such written order, nor in any event longer than is necessary to complete the construction for which the speed limit was ordered. A certified copy of the order shall be admissible in evidence in municipal court to establish the authority of such temporary speed limit, and it is hereby determined and declared that any such temporary speed limit found and ordered in accordance with this section shall be the speed which is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing, and any violation of such temporary speed limit shall be considered a violation of this code.
(Ordinance 2008-43 adopted 9/23/08)