Commercial truck regulations

Permits are necessary if your truck exceeds certain state regulations. Make sure you know if your truck meets or exceeds these regulations.

Table of Contents

Overview

If you're applying for a truck permit, you first want to check if your truck meets the state's regulations. Your truck’s weight and height is taken into consideration before it requires an oversize/overweight permit.

Legislation Regarding Dimensions and Weights of Trucks and Trailers

Weight limitations

Please reach out to the permits department with any questions regarding weight limitations

Height limitations

Your truck will not require a special permit if it does not exceed:

  • A width, including load, of 8 ft. 6 in. (If using tunnels)
  • A height, including load, of 13 ft. 6 in. (If not using tunnels)

There are also restrictions on your vehicle’s height depending on the route you are travelling and the vehicle type. Below are the maximum heights allowed per way and type of vehicle.

Way

Maximum Vehicle Height

Turnpike

 13 feet 6 inches

Ted Williams Tunnel

 13 feet 6 inches

Callahan Tunnel

 12 feet 6 inches

Sumner Tunnel

 12 feet 6 inches

O'Neill Tunnel (I-93)

 13 feet 6 inches

CANA (City Square) Tunnel

 13 feet 6 inches

Other Locations Not Listed

 13 feet 6 inches

Length limitations

Type of Vehicle

Maximum Vehicle Length

Motor vehicle not listed

 33 feet

Vehicle combination not listed other than semi trailer

 60 feet

Articulated bus

 60 feet

Auto home

 40 feet

Automobile transporter (traditional)

 65 feet

Automobile transporter (stinger-steered)

 75 feet

Boat transporter (traditional)

 65 feet

Boat transporter (stinger-steered)

 75 feet

Boat transporter (truck trailer)

 65 feet

Bus or school bus

 45 feet

House trailer

 40 feet

Saddlemount combination

 75 feet

Semi-trailer

 53 feet

Trailer in tractor-trailer combination

 53 feet

Trailer not in tractor-trailer combination

 33 feet

Truck

 40 feet

Holiday restrictions

No movement is permitted on the following days:

  • New Years Day
  • Memorial Day
  • Independence Day
  • Labor Day
  • Thanksgiving Day
  • Christmas Day

Contact

Phone

M-F 7am-4pm

Fax

(781) 431-5014

Address

668 South Avenue
Weston, MA 02493
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