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'
28'6"
Not Specified
but trailers are
limited to 28'6" each
20,000
34,000
80,000 (1)
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 (2)
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'
53'
60' (3)
Not Specified (4)
(5)
 
(1) Provided vehicle complies with Federal bridge gross weight formula.
(2) 800 lb./inch of tire, as measured between the flanges of the rim.
(3) No overall length if trailer is 53' or less.
(4) If each trailer is 28'6" or less, or 65' for 3-vehicle combination.
(5) Allowed only on Indiana Toll road and within 15 miles of makeup/breakup lot.