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Dimension | National Network | State and Other Supplemental Highways |
Width: | 8' 6" | 8' 6" |
Height: | 13' 6" | 13' 6" |
Length: | National Network | State and Other Supplemental Highways |
Bus | ||
Articulated bus | 65' operated in urban areas | 65' operated in urban areas |
Straight Trucks | 45' | 45' |
Straight truck and trailer | 70' | 70' |
Tractor-semitrailer combinations | No limit | 75' on state trunk highways |
Semitrailer | 53' see KPRA | 53' see KPRA |
Tractor-twin-trailer combination | No limit | Not allowed |
Trailers of twin-trailer combinations | 28' 6" | Not allowed |
Boat-transporter combination | ||
Overhang limitations | ||
Stinger-steered boat-transporter | 75' | |
Overhang limitations | 3' front, 4' rear | |
Auto-transporter | 66' | 66' |
Overhang limitations | 4' front, 5' rear | 4' front, 5' rear |
Stinger-steered auto-transporter | 75' | 66' |
Overhang limitations | 3' front, 4' rear | 4' front, 5' rear |
Saddlemount | 97' | 97' |
General overhang limitations | 3' front, rear NS | 3' front, rear NS |
Drawbar | 12' | 12' |
Dromedary | ||
Kingpin to rearaxle | 43' to the center of the rearmost axle or a point midway between tandem axles. Allowed on Interstates and designated highways and certain state trunk highways only. | 43' to the center of the rearmost axle or a point midway between tandem axles. Allowed on Interstates and designated highways and certain state trunk highways only. |
Length special limitations or restrictions | ||
Weight: | Interstate and Defense Highways | State and Other Supplemental Highways |
Steer axle | 13,000 Up to 20,000 pounds if the manufacturer's rated capacity of the axle and the tires are sufficient to carry the weight | 13,000 Up to 20,000 pounds if the manufacturer's rated capacity of the axle and the tires are sufficient to carry the weight |
Single axle | 20,000 | 20,000 |
Tandem axle | 34,000 | 34,000 |
Tridem axle | ||
Gross vehicle weight | 80,000 | 80,000 |
Load per inch width of tire | ||
Per wheel | 11,000 | 11,000 |
Tolerances | ||
APU allowance | 550 | 550 |
Natural gas allowance | 2,000 | 2,000 |
Weight special limitations or restrictions |