PART I
ADMINISTRATION OF THE GOVERNMENT (Chapters 1 through 182)
TITLE XIV
PUBLIC WAYS AND WORKS
CHAPTER 85
REGULATIONS AND BY-LAWS RELATIVE TO WAYS AND BRIDGES
Section 31
Speed of heavy vehicles with metallic tires
Section 31. No vehicle which with its load weighs more than four tons shall, when equipped with metallic tires, travel upon any public way at a speed greater than four miles an hour.