Cobb County accident report stated that on  December 22, 2014 Vehicle 1 was traveling NB on S. Cobb Drive at Powder Springs St in the left lane and that Vehicle 2 was also traveling NB on S. Cobb Drive in the right lane.  Vehicle 1 swerved in its lane and the front left bumper collided with the left rear quarter panel of Vehicle 2.  Driver 1 stated that he never left his lane of travel and did not collide with Vehicle 2.  Witness 1 agreed with Driver 2 and stated that Driver 1 did swerve and collide w Vehicle 2.  Driver 1 was cited for Failure to Maintain Lane.  No injuries were reported.  Note:  By the testimony of two or more witnesses.