Motor vehicle sales and other uses having as their primary function the sale or rental of retail goods displayed outdoors, provided no goods shall be displayed, stored or sold within 50 feet of a front lot line. No goods shall be displayed in a manner which will impede access by firefighting or other emergency equipment to any structure or other goods on the premises. No goods shall be displayed, stored or sold within 20 feet of a rear or side lot line. A landscape strip or a landscape buffer at least 15 feet wide shall be provided along each lot line.