Operating Hours, Restricted Travel, and Holiday Restrictions
Vehicles under 12 feet wide and under 14 feet high may travel from Monday 12:01 am through noon on Saturday, and Sunday from 12:01 am until noon the same day. Vehicles between 12 feet and 14 feet in width, over 13 feet and 11 inches in height, and between 80 feet and 114 feet long are only permitted to travel sunrise to sunset Monday through Friday, except for 7:00 am to 9:00 AM and 3:30 pm - 7:00 pm.
In the Boston area, routes 95 and 93 are restricted to travel between 9:30 am and 3:30 pm.
On the Massachusetts turnpike, between the New York line and I-95, permits are not required for vehicles up to 10 feet in width, up to 13 feet and 6 inches in height, and up to 80 feet in length. Turnpike permits are issued for vehicles up to 12 feet wide, 13 feet and 9 inches high, 80 feet long, and up to 99,000 pounds (in the Boston area, lower limits apply to Sumner, Callahan, and Ted Williams Tunnels). Loads that exceed these dimensions on the Turnpike require special engineering approval and a $350.00 fee.
No travel is allowed on major holidays and some holiday weekends.
Signs, Flags, and Lights Requirements
Signs, safety flags, and warning lights are often required when moving heavy haul loads or superloads for the safety of other drivers on the road.
Signs
For oversize loads that do not require an escort, you must use an “Oversize Load” sign on the vehicle’s front.
Dimensions of the sign should be 7 feet long, 18 inches high, and use black letters 10 inches high with a 1.41-inch brushstroke on a yellow background.
Flags
Fluorescent red safety flags must be mounted to each corner of the unit. If overhang exists, you must also hang flags on any extremities.
Lights
Flashing or strobe amber lights must be operating above the highest point of the vehicle. In addition, these lights must be visible from the front and rear of the vehicle.
Obtaining a permit
Massachusetts oversize permits are valid for five travel days and must be obtained before entering the state.
To request a permit, go to the portal on the MassDOT website here:
https://oasis.massdot.state.ma.us 
