There is a newer version of the Maryland Code
Maryland Transportation Section 11-172
§ 11-172.
  "Truck tractor" means the noncargo carrying power unit that operates in combination with a semitrailer or trailer, except that a truck tractor and semitrailer engaged in the transportation of automobiles or boats may transport motor vehicles or boats on part of the power unit.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.