The licensing period for trailer transit plates shall be from January 1 through December 31. Application for additional plates applied for during the period between the first day of September and the last day of December in any year will pay half the normal plate fee. It shall be lawful to use and display on mobile home, storage and light trailers the number plates issued for the next succeeding year on or after December 1st.
29- 250 C.M.R. ch. 158, § I