No person, while in charge of a motor vehicle, shall park or willfully allow such vehicle to stand upon a highway, road, or street or in a place open to the public leaving a child under the age of seven unattended therein, except when another responsible person of at least 12 years of age has immediate control over such child and is physically present in the vehicle. Any person convicted of a violation of this section shall be guilty of a misdemeanor. (Ord. 2164 § 3, 1997; Ord. 1915 § 1, 1992)