DALTON, GA. (WDEF)- A two-vehicle crash involving an overturned tractor-trailer caused delays on Interstate 75 South Saturday morning. The Georgia State Patrol says the crash happened shortly before 9 a.m. and involved an SUV and a tractor-trailer. According to investigators, the SUV made an improper lane change and struck the tractor-trailer in the right lane. The impact caused the truck driver to lose control, resulting in the tractor-trailer overturning. The driver of the SUV was cited for an improper lane change.