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There are some exceptions for farm tractors, hay bales, etc. found in KSA 8-1902.
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Single vehicle, 45 feet
except for cylindrically shaped (round) hay bales, for which the maximum height 14 ½ feet tall. (KSA 8-1904)
The commercial zone of Kansas City only applies to operating authority and registration in Kansas. The increased weight exceptions in the commercial zone are only in Missouri.
The maximum weight is 90,000 lbs., with a minimum of six axles, and cannot be operated on the interstate. A special bridge chart is found in KSA 8-1919.
Doubles may be pulled anywhere, so long as the trailers are not over 28 ½ feet in length each, except on the Kansas Turnpike, where double 53-foot trailers are legal.
Triple trailers are only allowed on the Kansas Turnpike with a “special vehicle combination” (SVC) annual permit (KAR 36-1-28). Turnpike access routes include all routes between the Turnpike and a motor freight terminal located within a 10-mile radius of each toll booth, except at the northeastern end of the Turnpike where a 20-mile radius is allowed. SVC access routes include all routes between the Interstate and a motor freight terminal located within 5 miles of the Interstate at Goodland.