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Text from the PDF text layer; check the PDF for anything that matters. CHAPTER 63
SPEED REGULATIONS
63.01 General 63.04 Special Speed Zones
63.02 State Code Speed Limits 63.05 Minimum Speed
63.03 Parks, Cemeteries and Parking Lots 63.06 Controlled Access Facilities
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 – twenty (20) miles per hour.
2. Residence or School District – twenty-five (25) miles per hour.
3. Suburban District – forty-five (45) miles per hour.
63.03 PARKS, CEMETERIES AND PARKING LOTS. A speed in excess of fifteen (15) miles per
hour 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. Special 10 MPH Speed Zones. A speed in excess of 10 miles per hour is unlawful on all
alleys within the City.
2. Special 25 MPH Speed Zones. A speed in excess of 25 miles per hour is unlawful on any
of the following designated streets or parts thereof.
A. On Roberts Ferry Road.
3. Special 45 MPH Speed Zones. A speed in excess of 45 miles per hour is unlawful on any
of the following designated streets or parts thereof.
A. On Park Road, from Forevergreen Road southerly to 340th Street SW, except the
designated School District zone along Park Road, which will have a speed zone of 25
miles per hour.
4. Signs. The Public Works Department of the City of Tiffin will post speed limit signs
consistent with the provisions of this section.
5. Highway 6 (Marengo Road). The Speed limit on Highway 6 (Marengo Road) is set by the
Iowa Department of Transportation.
Sources
- citycode: Chapter 63 – Speed Regulations (Chapter-63-Speed-Regulation.pdf) — where it was found ↗ first seen Oct 12, 2026
Data last updated October 16, 2026. Built from the archive's documents; see how the data is built.