Ohio Rev. Code § 4907.476
In its administration of sections 4907.47 to 4907.475 of the Revised Code, the public utilities commission shall, to the extent that it uses federal funds in connection with the erection, installation, or maintenance of any grade crossing protective devices or additional grade crossing protective devices, adhere to all pertinent federal laws and regulations. Where such laws or regulations require that the department of transportation make final decisions for the state in matters regarding grade crossing protective device projects or additional grade crossing protective device projects, or enter into contracts and agreements for such projects on behalf of the state, or take other actions regarding such projects on behalf of the state that are necessary to comply with such laws and regulations, the commission shall work with and through the department, and may make agreements with the department, in its administration of sections 4907.47 to 4907.475 of the Revised Code.
As a means of simplifying its administration of such sections, the commission may elect to use only state funds for the design or administrative costs associated with any such project. As a means of enforcing its orders under such sections, the commission may, as allowed by federal law and regulation, elect to use no federal funds in connection with the erection, installation, or maintenance of particular grade crossing protective device or additional grade crossing protective device projects.
R.C. § 4907.476