Maryland Transportation Section 15-112
§ 15-112.
  (a)   In this section, "minibike":
    (1)   Means a motor vehicle that:
      (i)   Has a saddle for the use of the rider;
      (ii)   Is designed to travel on not more than three wheels in contact with the ground; and
      (iii)   Is not subject to registration under Title 13 of this article; and
    (2)   Does not include a farm tractor.
  (b)   Any dealer or agent or employee of a dealer, any vehicle salesman, or any other person who sells a minibike shall inform the buyer that the use of a minibike on a highway may be illegal.
  (c)   Any dealer or agent or employee of a dealer, any vehicle salesman, or any other person who sells a minibike shall inform the buyer that local law, ordinance, and regulation may limit the use of the minibike.