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.
[Ord. No. 1250 §1, 9-4-1990]
Except where otherwise provided by signs erected pursuant to duly passed and approved ordinances, no person shall operate a vehicle on any street in the City in excess of twenty-five (25) miles per hour.
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 1974 §315.050; Ord. No. 710 §12, 11-1961; Ord. No. 1250 §§1 — 2, 9-4-1990]
A. 
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.
B. 
Posted Speed Limits. The operation of a vehicle at a speed in excess of those designated in Schedule I (posted speed limits) shall be considered evidence of driving at a rate of speed which is not reasonable, careful, prudent and lawful and considered dangerous to person, property, life and limb.
[CC 1974 §305.060; Ord. No. 710 §8, 11-1961]
The use of and results determined by any speed meter, machine or mechanism which seeks to reduce the error of manual operation to a minimum shall be acceptable as evidence where driving in excess of posted speed limits is the cause of action; except the use thereof shall not be construed to exclude any competent evidence secured by any other manner or means.