Front yards. There shall be a minimum yard of 80 feet from any road right-of-way into which space there shall be no encroachment of structures other than a fence, wall, or sign not larger than 32 square feet, and no encroachment of commercial usage other than parking space for customer or employee cars. There shall be a suitably landscaped buffer zone between road right-of-way and parking area of a minimum of 10 feet. In addition there shall be no outside storage permitted in the Industrial District.