[CC 1975 §76.010]
The State traffic laws regulating the speed of vehicles shall be applicable upon all streets within the City, except that the City may by ordinance declare and determine upon the basis of engineering and traffic investigation that certain speed regulations shall be applicable upon specified streets or in certain areas, in which event it shall be unlawful for any person to drive a vehicle at a speed in excess of any speed so declared when signs are in place giving notice thereof, but no City ordinance shall regulate the speed of vehicles upon controlled access highways of the State.
[CC 1975 §76.010]
The City Traffic Engineer is authorized to regulate the timing of traffic signals so as to permit the movement of traffic in an orderly and safe manner at speeds slightly at variance from the speeds otherwise applicable within the district or at intersections and shall erect appropriate signs giving notice thereof.
[CC 1975 §76.100]
Every person operating a motor vehicle or other conveyance on the streets of the City shall operate or drive the same in a careful and prudent manner, and in the exercise of the highest degree of care, and at a rate of speed so as not to endanger the property of another or the life or limb of any person, taking into consideration the time of day, the amount of vehicular and pedestrian traffic, the condition of the street or highway, the atmospheric conditions and the location with reference to intersecting streets or highways, curves, residences or schools. Nothing in this Section shall be construed to authorize any person to operate a motor vehicle in excess of specific speed limits established by law or ordinance.
[CC 1975 §76.110]
A. 
Whenever a zone in which the maximum speed at which a vehicle may be driven shall have been prescribed by ordinance the City Engineer shall cause appropriate signs to be placed in conspicuous positions on the street or part thereof embraced by such zone.
B. 
Every such sign shall show such maximum speed in letters and numerals against a contrasting background, and each of the numerals shall be at least five (5) inches high. Such signs shall be placed at such intervals from the beginning to the end of the zone as to be reasonably sufficient to inform drivers of vehicles of the speed limit. An appropriate sign calling a driver's attention to the fact that he/she is approaching a limited speed zone may be placed in an appropriate place or places.
C. 
Nothing in this Section shall be so construed as to prevent the enforcement of speed limitations prescribed for the City generally, whether or not maximum speed signs are placed or maintained in such districts.
No person shall drive a motor vehicle at such a slow speed as to impede or block the normal and reasonable movement of traffic, except when reduced speed is necessary for safe operation or in compliance with law. Peace Officers may enforce the provisions of this Section by directions to drivers, and in the event of apparent willful disobedience to this provision and refusal to comply with direction of an officer in accordance herewith, the continued slow operation by a driver is a misdemeanor.