§ 9.30 PARKING HOURS.
   Subd. 1.   It is unlawful for any person to stop, park or leave standing any vehicle upon any street for a continuous period in excess of 12 hours.
   Subd. 2.   The City Engineer may, when authorized by motion of the Council, designate certain streets, blocks or portions of streets or blocks as prohibited parking zones, or five-minute, ten-minute, 15-minute, 30-minute, one-hour, two-hour, four-hour, six-hour, eight-hour, morning or afternoon rush hour limited parking zones and shall mark, by appropriate signs, any zones so established. The zones shall be established whenever necessary for the convenience of the public or to minimize traffic hazards and preserve a free flow of traffic. It is unlawful for any person to stop, park or leave standing any vehicle in a prohibited parking zone, for a period of time in excess of the sign-posted limitation, or during sign-posted hours of prohibited parking.
   Subd. 3.   It is unlawful for any person to remove, erase or otherwise obliterate any mark or sign placed upon a tire or other part of a vehicle by a police officer, or other parking enforcement officer, for the purpose of measuring the length of time the vehicle has been parked.
   Subd. 4.   For the purpose of enforcement of this section, any vehicle moved less than one block in a limited time parking zone shall be deemed to have remained stationary.
(`80 Code, § 9.30) Penalty, see § 1.99