Recreational vehicles, including boats, boat trailers, snowmobiles and snowmobile trailers, collector's vehicles and trailers, as well as campers, tent campers, motor homes, trailers and travel trailers, may be parked in the R-2 and R-5 residential zone subject, however, to the following restrictions and regulations:
a. The area, exclusive of garage area, that may be used for storage of such recreational vehicles shall not exceed 7% of the total lot area or 400 square feet, whichever is less.
b. Offstreet parking provided for and utilized by recreational vehicles shall be in addition to any other parking provisions required by this chapter.
c. Horse trailers may be considered as a recreational vehicle where horses and/or ponies for riding purposes are kept in connection with single family residence use on the premises as a permitted accessory use.
d. No more than two collector's vehicles may be stored outside. Additional collector's vehicles must be kept in a garage or accessory building.