Kansas Administrative Regulations

Regulation Number:36-1-31
Article Title: Special Permits, Loads and Vehicles
Tax Type:Vehicles
Brief Description:


Equipment. (a) All equipment on the SVC must conform with these regulations and
those of the federal motor carrier safety regulations, 49 C.F.R. 390-399, as in effect on April 1,
1990 and adopted herein by reference. All equipment operated under the annual SVC permit is
subject to periodic field inspection to ensure continued compliance with all equipment require-
ments. (b) Power. All truck-tractors shall be powered to provide adequate acceleration ability and hill
climbing ability under normal operating conditions, and to operate on level grades at speeds
compatible with other traffic. The ability to maintain a minimum speed of 40 miles per hour under
normal operating conditions on any grade and to be able to resume a speed of 40 miles per hour
upon any grade on which the SVC is stopped is required. (c) Tires. All tires shall be of the same size and
construction (radial or non-radial). Tires must be properly inflated for the load being carried. Each
axle must have two tires at each end of the axle, except for the steering axle. (d) Fifth wheels. Every fifth wheel
shall be: (1) clean and lubricated with a light-duty grease; (2) located in a position which provides ade-
quate stability. (e) King pins. Every king pin shall be solid-type and permanently fastened to the semitrailer.
Screw-out or folding king pins are prohibited. (f) Pick-up plates. Pick-up plates shall be of
equal strength to the fifth wheel. (g) Hitch connections. All hitch connections shall be no-slack air-actuated ram-type and isolated from the primary air transmission system. (h) Pressure controlling devices. All pressure
controlling devices shall be located outside the cab of the tractor and not accessible to the driver
while in the cab. (i) Drawbars. The drawbar length shall be the
practical minimum consistent with clearances required between trailers for turning and backing
maneuvers. (j) Axles. All axles permanently attached to the trailer and/or semitrailer shall be designed for the
width of the trailer. Drop or lift axles shall not be permitted. An SVC shall have a minimum of six
and a maximum of nine axles. (1) The total weight on any single axle shall not exceed 20,000 pounds. The total weight on any tandem axle shall not exceed 34,000 pounds. Only single and tandem groupings shall be permitted.
The total gross weight of the SVC shall not exceed 110,000 pounds. (2) The total weight on any group of two or
more consecutive axles shall not exceed the bridge formula as set out in 23 U.S.C. 127 as in effect on
December 22, 1987 and adopted herein by reference. Compliance with height and length re-
striction requirements is required. (k) Brakes. Fast air transmission and release valves shall be provided on all semitrailer and trailer axles. Brakes shall be installed to apply consecutively beginning with the rear axle and pro-
ceeding to the front axle. The use of engine-retarder brakes shall be prohibited. (l) Antispray devices. Antispray mud flaps shall be attached to the rear of each axle except the steering axle. Mud flaps shall have a surface de-
signed to absorb and deflect excess moisture to the road surface. (m) Trailers/semitrailers. All trailers/semitrail-
ers shall conform as follows: (1) The heaviest trailer or semitrailer shall be placed in front and the lightest at the rear;
(2) The length of a semitrailer or trailer in a SVC shall not exceed 281/2 feet in length; and (3) A semitrailer used with a converter dolly shall be considered to be a trailer. (n) Convex mirrors. In addition to the standard
mirrors, each SVC shall be equipped with convex mirrors (minimum 6 inches in diameter) on the
left and right sides of the truck-tractor. Such mirrors shall be visible by the driver while operating
the SVC. (Authorized by K.S.A. 68-404; implementing K.S.A. 1989 Supp. 8-1911, as amended
by L. 1990, Ch. 50, Sections 2, 4; effective March 4, 1991.)