(1) Whenever the city manager, or the manager’s designee finds, on the basis of falling snow, sleet, freezing rain, formation of ice, or on the basis of a forecast by the U. S. Weather Bureau of snow, sleet, or freezing rain, that weather conditions will make it necessary that roads be sanded and that parking on city streets be prohibited or restricted for snow plowing and other purposes, the city manager or the manager’s designee may put into effect a parking prohibition on parts or all of priority three routes as necessary by declaring it in a manner prescribed by section 5.681 of this code. The prohibition shall remain in effect until terminated by announcement of the city manager or the manager’s designee in accordance with section 5.682 of this code.

(2) While the prohibition is in effect, no person shall park or allow to remain parked any vehicle on a street to which it applies.

(3) Nothing in this section shall be construed to permit parking at any time or place where it is forbidden under any other provision of law.