Chapter 5-6 Specific Provisions - By Plate Type E. Subject to any municipal regulation, ordinance or bylaw, the dealer must display a permanently affixed exterior sign of sufficient size and design to give the general public notice of the name and nature of the business. Specific Provisions - Trailer Dealers: To receive or retain a dealer’s general registration or general registration number plate, a trailer dealer, as defined in M.G.L. c. 90, § 1, shall satisfy the following conditions: A. The dealer is principally and substantially engaged in the business of buying, selling or exchanging trailers. B. The dealer has suitable premises to conduct the business which shall include an office for the maintenance of records or sales. C. The dealer has an area to display the trailers offered for sale. D. Subject to any municipal regulation, ordinance or bylaw, the dealer must display a permanently affixed exterior sign of sufficient size and design to give the general public notice of the name and nature of the business. 01/01 5:39