A Local Mother And Three Children Have Been Hospitalized As A Result Of A Wreck Caused By Black Ice In Hawkins County. The Four Were Taken To Holston Valley Medical Center In Kingsport Authorities Worked A Total Of Four Ice-Related Mishaps On The Roadways. Meanwhile, South Of Chattanooga, More Than 30 Cars Were Involved In A Crash On Interstate 75 Due To Icy Road Conditions. Motorists Are Urged To Be On The Lookout For Black Ice And Slick Roads In The Region.