Parking space as required in the foregoing shall be
on the same lot with the main building, except that in the case of
buildings other than dwellings, spaces may be located as far away
as 600 feet. Every parcel of land hereafter used as a public parking
area shall be surfaced with gravel, stone, asphalt or concrete. It
shall have appropriate guardrails, parking blocks, etc., where needed
as determined by the Administrator. Any lights used to illuminate
said parking areas shall be so arranged as to reflect the light away
from adjoining premises if in a residential district and/or from adjoining
streets.