In any R-3 District, a transitional use shall be permitted on a lot the side lot line of which adjoins, either directly or across an alley, a B or M district. The permitted transitional uses for any such lot in an R-3 District shall be of any use permitted in the R-4 District. In such case, the requirements governing lot area per family, off-street parking, yards and other open spaces, shall be the same in an R-3 District as in an R-4 District. Any transitional use shall not extend more than seventy-five (75) feet from the side lot line of the lot which adjoins the district boundary line. (Ord. 1069-94. Passed 4-28-94.)