No one shall park a motor truck, semi-trailer, motor vehicle with trailer attached, unattached trailer, camper, motor home, or boat in violation of the following regulations. The provisions of this section shall not apply to pick-up, light delivery or panel delivery trucks.
(Code of Iowa, Sec. 321.236 [1])
1. All Night. No such vehicle shall be left unattended or parked upon any street or alley within or abutting residential zones for a period of time longer than one hour, between the hours of 6:00 p.m. and 4:00 a.m. of any day.
2. Noise. No such vehicle shall be left standing or parked upon any street, alley, public or private parking lot, or drive of any service station between the hours of 6:00 p.m. and 4:00 a.m. with the engine, auxiliary engine, air compressor, refrigerating equipment or other device in operation giving off audible sounds excepting only the drive of a service station when actually being serviced, and then in no event for more than 30 minutes.
3. Livestock. No such vehicle containing livestock shall be parked on any street, alley, or highway for a period of time of more than 30 minutes.