The following uses shall be permitted if and when authorized by the Board:
(a) Drive-In Establishments. Drive-in eating and drinking places, summer gardens and roadhouses, including entertainment and dancing and the sale and consumption of alcoholic beverages, provided such uses are located on lots fronting only on a primary or secondary thoroughfare as shown on the Thoroughfare Plan, and provided the principal building in which such activities are housed is distant not less than 100 feet from any R-District;
(b) Commercial Planned Development Projects. Subject to the provisions of Chapter 1278;
(c) Clinics. (Ord.1420. Passed 2-28-66.)