(1) Regulations of this chapter shall not prevent the use of city property by the city, its employees and agents for a designated purpose and shall not be deemed to prohibit the use of public ways and roadsides in parks except on areas where the parking of vehicles will damage the improved grounds.

(2) No person shall park or store a vehicle on property of the city except on written permission from the designated city official.

(3) The authorization granted under this section shall be of a type prescribed by the city, and shall be on the dashboard of the vehicle so as to be visible and readable through the front windshield from outside the vehicle or displayed as otherwise provided in the written conditions upon which the authorization is granted.