offense : truck, pickup, allowing children under age 12 in bed of ( farm trucks exempt) ---from my 2001 mv index $ 35 fine
statute/ CMR : C.90 $13 A "no person shall operate a motor vehicle, commonly known as a pick up truck, nor shall the owner permit it to be operated fro a distance more than 5 miles, in excess of 5 mph, with persons under the age of 12 in the body of such truck, unless such truck is part of an official parade, or has affixed OWNER REPAIR or FARM license plate..... it goes on to say that garbage men, firefighters and utility workers can hang from the end of vehicles and kids on skates or bikes cannot hang onto."---from my 2002 mass criminal law and motor vehicle handbook
or how about since we are all animals just try the C. 90 $ 22 H Transporting unsecured animal in load area of vehicle ( pick up beds) $ 50 fine
This may work im still learning MA law....down here in VA it's under $ 46.2-1156.1 Transportation of persons less than 16 yrs of age..parades are an exception, or crossing the street in the farm