On streets not otherwise restricted, merchandise
may be transferred from or to trucks or other vehicles over the sidewalk
by the use of skids and planks, only when reasonably necessary, and
provided that the sidewalk is not unreasonably obstructed and then
only for such reasonable time as is necessary. If the sidewalk and
travel thereon is obstructed by skids or planks for more than 10 minutes
at a time, any police officer may order such skids or planks removed.
The operator of a truck, semitrailer, or tractor-trailer
shall not stop, stand, or park said vehicles at any time for the purpose
of loading or unloading of debris, construction materials, merchandise,
or equipment so as to obstruct more than 1/2 of the traveled roadway
of any street.