A Single Vehicle Crash Is Under Investigation By The Johnson City Police Deparment. It Happened Tuesday Morning On 1-26 Westbound Near Mile Marker 18. A Pontiac Grand Am Traveled Off The Right Side Of The Interstate And Rolled. The Driver 48 Year Old Robin Chenault Of Johnson City Was Not Wearing A Seatbelt And Was Ejected From The Vehicle. She Was Transported To The Johnson City Medical Center For Life Threatening Injuries And Is Listed In Critical Condition.