63.01 GENERAL. Every driver of a motor vehicle on a street shall drive the same at a careful and prudent speed not greater than nor less than is reasonable and proper, having due regard to the traffic, surface and width of the street and of any other conditions then existing, and no person shall drive a vehicle on any street at a speed greater than will permit said driver to bring it to a stop within the assured clear distance ahead, such driver having the right to assume, however, that all persons using said street will observe the law.
(Code of Iowa, Sec. 321.285)

63.02 STATE CODE SPEED LIMITS. The following speed limits are established in Section 321.285 of the Code of Iowa and any speed in excess thereof is unlawful unless specifically designated otherwise in this chapter as a special speed zone.
1. Business District – 20 MPH.
2. Residence or School District – 25 MPH.
3. Suburban District – 45 MPH.

63.03 PARKS, CEMETERIES, AND PARKING LOTS. A speed in excess of 15 MPH in any public park, cemetery, or parking lot, unless specifically designated otherwise in this chapter, is unlawful.
(Code of Iowa, Sec. 321.236[5])

63.04 SPECIAL SPEED ZONES. In accordance with requirements of the Iowa Department of Transportation, or whenever the Council shall determine upon the basis of an engineering and traffic investigation that any speed limit listed in Section 63.02 is greater or less than is reasonable or safe under the conditions found to exist at any intersection or other place or upon any part of the City street system, the Council shall determine and adopt by ordinance such higher or lower speed limit as it deems reasonable and safe at such location. The following special speed zones have been established:
(Code of Iowa, Sec. 321.290)
1. A speed in excess of 20 MPH is unlawful on South Main Street from Randolph Street to E Street.
2. A speed in excess of 30 MPH is unlawful on Randolph Street from the west City limits to 180 feet east of Depot Street.
3. A speed in excess of 35 MPH is unlawful on Randolph Street from 180 feet east of Depot Street to the east City limits.

63.05 MINIMUM SPEED. A person shall not 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.
(Code of Iowa, Sec. 321.294)

63.06 CONTROLLED ACCESS FACILITIES. Speed limits on controlled access facilities are as specified in Chapter 140 of this Code of Ordinances.

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