(Statewide/Rural surveys were not conducted in 2005.)
Crash Prevention and Safety Illinois Department of Transportation - Did not respond in 2004 2006 Operations and Maintenance Illinois Department of Transportation - Did not respond in 2004 2006 Traffic Management Illinois Department of Transportation 2004 - Not surveyed in 2006 Traveler Information Illinois Department of Transportation 2004 2006 Surface Transportation Weather Illinois Department of Transportation - Did not respond in 2004 2006