First responders, including the Carroll Fire Department rescue unit, were dispatched to an accident on Highway 30 at approximately 7 a.m. this morning. Witnesses say it is a sheet of ice, and a vehicle had slid on the highway and rolled just west of Carroll. Drivers are being urged to exercise caution, slow down and allow extra time to get to their destination if they need to be out on the roadways at all. Carroll Broadcasting will bring you more details as official reports become available.