Okla. Stat. tit. 47, § 47-230.4: Powers and duties of Commissioner

To the extent necessary to administer the Oklahoma Motor Carrier

Safety and Hazardous Materials Transportation Act, and consistent

with budget and manpower limitations, the Commissioner:

1. shall adopt and promulgate rules and regulations in order to

carry out the provisions of the Oklahoma Motor Carrier Safety and

Hazardous Materials Transportation Act relating to motor carrier

safety in the transportation of property and hazardous materials in

intrastate and interstate commerce, and to coordinate the

implementation of a transportation emergency response system;

2. may adopt by reference and enforce all or any portion of the

federal motor carrier safety regulations and the hazardous materials

regulations of the United States Department of Transportation, as

now or hereafter amended;

3. shall conduct a continuing review of all aspects of motor

carrier safety and the transportation of property, including

hazardous materials, in order to determine and recommend appropriate

steps to assure safe transportation;

4. may authorize any officer, employee or agent of the

Department to:

a. conduct investigations; make reports; issue

subpoenas; conduct hearings; require the production of relevant

documents, records and property; take depositions; and conduct

directly or indirectly research, development, demonstration and

training activities,

b. enter upon, inspect and examine at reasonable

times and in a reasonable manner, the records and properties of

persons to the extent such records and properties relate to motor

carrier safety or the transportation or shipment of hazardous

materials in commerce, and to inspect and copy records and papers of

carriers and other persons to carry out the purposes of the Oklahoma

Motor Carrier Safety and Hazardous Materials Transportation Act,

c. stop and inspect any driver or commercial motor

vehicle for any violation of the Oklahoma Motor Carrier Safety and

Hazardous Materials Transportation Act or rules and regulations

issued pursuant thereto,

d. declare and mark any transport vehicle or

container as out of service if its condition, filling, equipment or

protective devices would be hazardous to life or property during

transportation, or if records thereof reflect such hazard, or if

required records are incomplete,

e. prohibit any commercial driver from transporting

hazardous materials if such driver is unqualified or disqualified

under any federal or department regulation, and

f. administer and enforce the provisions of the

Oklahoma Motor Carrier Safety and Hazardous Materials Transportation

Act and any rules and regulations issued pursuant thereto.

Any such officer, employee or agent shall, upon request,

display proper credentials prescribed or approved by the

Commissioner.