1. “Department” means the Oklahoma Department of Transportation;

2. “Railroad rights-of-ways”, “trackage” or “projects” shall include within their meaning, but shall not be limited to: any roadbed, drains, fences, ties, switches, rails, ballast, signs, signals, lights, equipment, bridges, tools, crossings, underpasses, overpasses, construction and administration buildings and any and all other property, rights, easements and interests whether owned in fee or leased by this state, or at any public highway railroad crossing;

3. “Owner” shall include all individuals, copartnerships, associations, corporations, companies, transportation companies, public service corporations, the United States or any agency or instrumentality thereof, common carriers by rail and railroad companies having any title or interest in any real or personal property rights, easements and interest authorized to be acquired, leased or used by this act;

4. “Income” and “funds” and “revenue” shall include such money as may be appropriated, dedicated, granted or donated to the Department to accomplish the purposes of this act together with any funds otherwise dedicated to the Railroad Maintenance Revolving Fund; and

5. “Intermodal transportation” shall mean the linking of two or more modes of transportation including highway, mass transit, railroad, aviation or waterway transportation of all transportation-related industries in this state.