(a) For purposes of this subchapter, an unzoned commercial
or industrial area is an area that:
(1) is centered on the location of an existing or proposed
sign structure, and measured, on the same side of the highway, 800
feet in each direction along the highway right of way to a depth of
660 feet; and
(2) contains two or more commercial or industrial activities,
as defined by §21.163 of this subchapter (relating to Commercial
or Industrial Activity); and
(3) 50 percent or less of which is used for residential
purposes.
(b) To determine whether an area is using 50 percent
or less for residential purposes under subsection (a)(3) of this section,
the department will evaluate for residential use each property within
the designated area that is represented to be used for residential
purposes. Not more than one acre will be considered residential for
each property determined to be a residence.
(c) A road or street is considered to be used for residential
purposes only if residential property is located on both of its sides.
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