• Illinois Department of Transportation
• Office of Planning and Programming
• Federal Highway Administration SAFETEA-LU
• SAFETEA-LU Statewide Transportation Planning: Final Guidance
• Illinois Travel Statistics
• Illinois Highway Statistics
• Illinois Highway and Street Mileage Statistics
• Illinois Department of Transportation Annual Report
• Illinois Motorist Opinion Survey
• Division of Public and Intermodal Transportation Newsletter
• Consultation Procedures with Non-Metropolitan Areas
• Regional Transportation Authority