The city manager and his assigns shall have the general responsibility and authority to determine the installation and proper timing and maintenance of traffic control devices, to conduct engineering analyses of traffic accidents and to devise remedial measures, to conduct engineering investigations of traffic conditions, to plan the operation of traffic on the streets and highways of this city, and to cooperate with other officials in the development of ways and means to improve traffic conditions, and to carry out the additional powers and duties imposed by ordinances of this city.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.01)
(a) 
The city manager or his assigns is empowered to make regulations necessary to make effective the provisions of this traffic code and to make and enforce temporary or experimental regulations to cover emergencies or special conditions. No such temporary or experimental regulation shall remain in effect for more than 90 days.
(b) 
The chief of police or his assigns may test traffic control devices under actual conditions of traffic.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.02)
(a) 
Whenever in this traffic code the authority is given to the city manager or his assigns to do acts as they deem or in their opinion are advisable, or necessary, or desirable, such acts shall be based on his observations and studies, according to generally used, accepted traffic control principles or techniques.
(b) 
Traffic innovations and experiments, however, are not to be inhibited hereby.
(c) 
As to any given traffic control device, signal, sign, marker or marking, it shall be initially presumed that such device, signal, sign, marker, or marking independently erected by the city manager or his assigns has been installed pursuant to their observations and studies, based on generally used, accepted traffic control principles or techniques.
(d) 
Any responsibility or authority imposed or conferred on the city manager by the provisions of this section may be performed by the chief of police or by those officers, employees, or agents of the city working under their supervision and control and designated by the city manager to perform the same.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.03)
(a) 
It shall be the duty of the officers of the police department or such officers as are assigned by the chief of police to enforce all traffic laws of this city and of the state.
(b) 
Officers of the police department or such officers as are assigned by the chief of police are authorized to direct all traffic by hand or signal in conformance with traffic laws, provided that in the event of a fire or other emergency or to expedite traffic or to safeguard pedestrians, officers of the police department may direct traffic as conditions may require notwithstanding the provisions of the traffic laws.
(c) 
Officers of the fire department, when at the scene of a fire, may direct or assist the police in directing traffic there or in the immediate vicinity thereof.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.04)
It is unlawful and a misdemeanor for any person to do any act forbidden or fail to perform any act required in this traffic code.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.05)
No person shall willfully fail or refuse to comply with any lawful order or direction of a police officer or fire department official.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.06)
No person upon a skateboard, roller skates, or riding in or by means of any coaster, toy vehicle, or similar vehicle, shall go upon any sidewalk or roadway.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.07)
Any police officer of the city shall have the power and is authorized to arrest, without a warrant of arrest being first issued, any person who violates any traffic law of the city of any provision of the state motor vehicle laws as are applicable within the city limits in the presence of or within the view of such arresting officer.
(1995 Code of Ordinances, Title VII, Chapter 70, Section 70.08)