No motorized vehicle, boat, motor home, travel trailer, other trailer, camper, recreational vehicle or semi-tractor of any kind shall be parked in a required front yard or side yard of any lot, except on a hard surface with direct connection to a public street.
Also, automotive vehicles or trailers of any kind that are inoperable or that do not have current license plates shall not be parked or stored anywhere on a lot other than in a completely enclosed building.
And, no agricultural machinery, semi trailer, commercial trailer or other vehicle exceeding forty (40) feet in length shall be parked or stored in any residential district, except emergency vehicles or moving vans.
Please see Chapter 69.13 of the City Code for more information.