6-2-11: TRUCK PARKING:
   A.   Legal Areas Posted: It is unlawful to park a detached semi- trailer upon any street, City-owned parking lot, or other public property except such as are specifically designated by the Council by resolution and sign-posted.
   B.   Weight Restrictions; Residential District: It is unlawful to park a truck (other than a truck of 7,000 pounds gross vehicle weight, or less), truck-trailer, tractor-trailer or truck-tractor within an area zoned as a residential district except for the purpose of loading or unloading the same, and then only during such time as is reasonably necessary for such activity.
   C.   Weight Restrictions; Business District: It is unlawful to park a commercial vehicle of more than twelve thousand (12,000) pounds gross vehicle weight upon any street in the business district except streets as specifically designated by the Council by resolution and sign-posted, but parking of such vehicle for a period of not more than thirty (30) minutes shall be permitted in such space for the purpose of necessary access to abutting property while actively loading or unloading when such access cannot reasonably be secured from an alley or from an adjacent street where truck parking is not so restricted.
   D.   Length Of Vehicle: It is unlawful to park a truck or other vehicle using or equipped with a trailer, or extended body or other extension or projection beyond the original length of such vehicle, or any passenger bus, diagonally along any street except for a time sufficient to load or unload, and in such case, only parallel parking shall be permitted. Provided, however, that a truck may stand backed up to the curb if the weight or bulk of the load makes parallel parking impracticable, but then only for a period of time sufficient to load or unload.
   E.   Time Limited: Parking of commercial vehicles is permitted in duly designated and sign-posted loading zones, and in alleys, for a period of up to twenty (20) minutes; provided, that such alley parking does not prevent the flow of traffic therein, all of which shall be for the purpose of access to abutting or adjacent property while actively loading or unloading. (1988 Code § 9.11)