No person, other than one employed directly or indirectly by this
Town or by the Commonwealth of Massachusetts and while in the performance
of necessary public duties, shall at any time place or leave in any
sidewalk, street or highway any article, material or merchandise,
or park a vehicle or cart in any sidewalk, street or highway for the
purpose of displaying merchandise, unless a permit issued by the Select
Board in the case of Town ways or by the Department of Public Works,
Commonwealth of Massachusetts, in the case of state highways authorizing
the use of the sidewalk, street or highway has been granted and is
in effect, except as may be necessary for the reasonable and expeditious
loading or unloading of any such article, material, merchandise, cart
or vehicle; provided, however, that such property shall never be left
so as to obstruct the free passage of pedestrians or vehicular travel.