Okla. Stat. tit. 47, § 47-14-107

As used in this chapter:

1. "Axle load" means the total load transmitted to the road by

all wheels whose centers are included between two parallel

transverse vertical planes forty (40) inches apart, extending across

the full width of the vehicle;

2. "Tandem axle" means any two or more consecutive axles whose

centers are more than forty (40) inches apart, but not more than

ninety-five (95) inches apart;

3. "Split tandem axle" means any group of two or more

consecutive axles where the center of any two adjacent axles exceeds

ninety-five (95) inches, but does not exceed one hundred twenty

(120) inches;

4. "Nondivisible" means any load or vehicle exceeding

applicable length or weight which, if separated into smaller loads

or vehicles, would:

a. compromise the intended use of the vehicle,

b. destroy the value of the load or vehicle, or

c. require more than eight (8) hours to dismantle using

appropriate equipment;

5. "Dual lane axles" also known as "trunnion axles" means an

axle configuration with two individual axles mounted in the same

transverse plane, with four tires on each axle, connected at a pivot

point that allows each individual axle to oscillate in a vertical

Oklahoma Statutes - Title 47. Motor Vehicles Page 668

plane to provide constant and equal weight distribution on each

individual axle; and

6. "Dual lane axles group" also known as "trunnion axle group"

means two or more consecutive trunnion axles that are individually

attached to, and/or articulated from, the vehicle, and may include a

weight equalizing suspension system.