When it appears that the placing of the signs prescribed by section one hundred and forty or section one hundred and forty-two or by both of said sections, is impracticable or unnecessary, the department, on petition, may release the railroad corporation or the county, city or town, as the case may be, from compliance with said section or sections.
Mass. Gen. Laws ch. 160, § 144
Release of railroad or municipality from duty to provide signs
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.