A teenager was flown to an Atlanta hospital Tuesday morning after her vehicle collided head on with a tractor trailer on Hwy. 369 in north Forsyth. Forsyth County firefighters spent nearly an hour working to free the 18-year-old from a Nissan Altima, which overturned after the collision. The wreck, which occurred about 11 a.m. at Gravitt Road and just west of North Forsyth High, shut down traffic for hours in both directions along the well-traveled corridor.