No person shall operate or park any motor vehicle on any pedestrian
way or sidewalk within the City of Colby, except maintenance vehicles.
Pursuant to § 349.215, Wis. Stats., those adult persons
appointed by the Police Department to act as school crossing guards
shall have the authority to stop vehicular traffic and to keep it
stopped as long as necessary at their respective school crossings
for the purpose of permitting school children to cross the street.