Okla. Stat. tit. 47, § 47-1-107.4: Class D motor vehicle

CLASS D MOTOR VEHICLE

A. A Class D motor vehicle is any motor vehicle or combination

of vehicles which:

1. Regardless of weight:

a. is marked and used as an authorized emergency vehicle,

as defined in Section 1-103 of this title, or

b. is designed and used solely as a recreational vehicle;

2. Is a single or combination vehicle with a gross combined

weight rating of less than twenty-six thousand one (26,001) pounds;

3. Is a single or combination farm vehicle with a gross

combined weight rating of more than twenty-six thousand one (26,001)

pounds if:

a. it is entitled to be registered with a farm tag and

has a farm tag attached thereto,

b. it is controlled and operated by a farmer, his or her

family or employees,

c. it is used to transport either agricultural products,

farm machinery, farm supplies or any combination of

those materials to or from a farm,

d. it is not used in the operations of a common or

contract motor carrier, and

e. it is used within one hundred fifty (150) air miles of

the person's farm or as otherwise provided by federal

law; or

4. Is operated by a licensed driver employed by a unit of local

government that operates a commercial motor vehicle within the

boundaries of that unit of local government for the purpose of

removing snow or ice from a roadway by plowing, sanding or salting,

if:

a. the properly licensed employee who ordinarily operates

a commercial vehicle for these purposes is unable to

operate the vehicle, or

b. the employing governmental entity determines that a

snow or ice emergency requires additional assistance.

B. A Class D Motor Vehicle shall not include any vehicle which

is:

1. Designed to carry sixteen or more passengers, including the

driver; or

2. Required to be placarded for hazardous materials under 49

C.F.R., Part 172, subpart F; provided, a farm vehicle, as defined in

paragraph 3 of subsection A of this section, which is required to be

placarded for hazardous materials under 49 C.F.R., Part 172, subpart

F, shall be considered to be a Class D motor vehicle.