Oklahoma Department of Transportation
   Provides departmental organization and contacts, aeronautic, highway, public transportation, railroad, and waterway information, contracts, proposals, and construction standards and specifications as well as public service information and links to related
   http://www.okladot.state.ok.us/

Oklahoma Turnpike Authority
   Provides organizational history and background information, turnpike maps, engineering drawings, and extension information, toll collection reports, and information and contacts for the PikePass automated toll collection system.
   http://www.pikepass.com/