A railroad corporation, in moving traffic between points in the commonwealth, shall not haul or use, or permit to be hauled or used, on its lines any car which is not equipped with couplers coupling automatically by impact, and which do not require men to go between the cars to uncouple them.
Mass. Gen. Laws ch. 160, § 157
Use of car not equipped with automatic couplers
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.