The American Driver
From Drivers...For Drivers
National Weight & Size Provisions
Width
Height
Semi-Trailer in
Tractor-Semi-Trailer Combo
Full Trailer
Doubles
Single Axle
(lb.)
Tandem Axle
(lb.)
Gross Vehicle Weight
(lb.)
102"
13'6"
53'6"
28' (1)
Not Specified (2)
20,000
34,000
80,000
State/Provincial Weight & Size Limits
Steering Axle
(lb.)
Single Axle
(lb.)
Tandem Axle
(lb.)
Gross Vehicle Weight
(lb.)
12,000
20,000
34,000
80,000
Width
Height
Straight Truck
Semi-Trailer
Full Trailer
Tractor &
Semi-Trailer
Tractor &
Semi-Trailer &
Full Trailer
Tractor & Triples
Other/Specials
102"
13'6"
40'
53'6"
28'6"
(3)
(2)
Not Permitted
 
(1) 28'6" for trailers with 1982 or older year model operating on 12/01/82.
(2) Tractor cannot exceed 40'.  Trailers cannot exceed 28' apiece unless manufactured and in use prior to Dec. 2, 1982 - these trailers may be 28'6" in length.
(3) Tractor cannot exceed 40' and single trailer cannot exceed 53'6".