Massachusetts Driving Law On Speed Limits

No person shall "run" a motor vehicle at a rate of speed greater than is reasonable and proper, having regard to traffic and the use of the way and the safety of the public.1 Ch. 90, '17

65 MPH on certain parts of interstate highways2 Ch. 90, '17A

The State or a local government may regulate the speed limit on a highway. Ch. 90, '18 Note: Massachusetts law does not specifically state whether different highway speed limits may be established either for different types of vehicles, for various weather conditions or for different times of the day.

No person shall drive in such a manner as to obstruct unnecessarily the normal movement of traffic upon a highway. 720 CMR 9.06(6)(a)

I. No vehicle with a load of weighing >4 tons when equipped with metallic tire shall be operated at a speed >4 MPH. Ch. 85, '31 II. Certain State agencies have the authority to regulate speed on certain roads or highways under their jurisdiction. The regulations governing these speed limits are not reported in detail.3 III. Except on limited access highways, a school bus shall not be driven >40 MPH while actually engaged in carrying school children. Ch. 90, '17 IV. A motorized bicycle shall not be driven at speed >25 MPH. Ch. 90, '1B (& 1)