Okla. Admin. Code § 730:40-1-12
The Department shall maintain a continuing review of the status and condition of the railroad network in this state. In that regard, the Department shall coordinate with private railroad companies in rail system rationalization projects, rail line abandonments, mergers of two or more railroad companies, acquisition of one company by another, or acquisition of an operating railroad by a non-carrier entity. Although the Oklahoma Corporation Commission is the state agency authorized by state law to represent the State of Oklahoma in railroad and rail related proceedings before the Interstate Commerce Commission, the Department shall cooperate with the Corporation Commission and its staff, including the provision of such data, information or advice as that Commission may request, in the interest of maintaining an adequate and efficient rail system throughout this State.
Okla. Admin. Code § 730:40-1-12