State Law References — Authority of city to establish reasonable speed regulations §304.120, RSMo.; speed limits generally, §304.010, RSMo.; speed limits on divided limited access highways through cities, §304.012, RSMo.
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.
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 §11-20; Ord. No. 847 §11-20, 5-6-1997]
A. 
No person shall operate or drive any motor vehicle on any street within the City at a speed greater than thirty (30) miles per hour, unless a different speed has been established for any given area by this Chapter or Schedule I of this Title.
B. 
Notwithstanding anything herein to the contrary, no person shall operate or drive any motor vehicle on any street within the City at a speed greater than fifteen (15) miles per hour when such street or the street or sidewalk right-of-way or any area which abuts the street or sidewalk right-of-way is under construction or repair, and such reduced speed limit has been posted.
[CC 1975 §11-21]
It shall be unlawful for any person to drive any motor vehicle in any school zone within the City at a greater speed than twenty (20) miles per hour between the hours of 7:00 A.M. and 4:00 P.M. on days school is in session.
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 an ordinance violation.
[CC 1975 §11-22]
Every person operating any motor vehicle on the streets of the City shall drive said vehicle at a rate of speed which does not endanger any other person or any other person's property, taking into consideration the time of day, the amount of vehicular and pedestrian traffic, the condition of the street, the atmospheric conditions and the location with reference to intersecting streets, curves and hills; provided however, that this Section shall not be construed to authorize the driver of any motor vehicle to exceed the maximum limit prescribed in Sections 320.025 through 320.035 of this Chapter.
No person shall operate a motor vehicle upon those portions of the roadways which are set forth and described in Schedule I at a rate of speed in excess of that speed limit set for such portions of the roadways by said Schedule.
[CC 1975 §11-24]
It shall be unlawful for any person, firm or corporation to mutilate, injure, deface or destroy any sign relating to the speed limits of the City or any sign relating to the kind of vehicles permitted to use said streets when said sign shall have been placed by authority of the Board of Aldermen and the violation of this Section shall be deemed a misdemeanor.