The northbound lanes were closed before Cleveland Avenue, just south of the Polar Rock neighborhood, at about 9:30 a.m., and two right lanes reopened 15 minutes later. Gridlock conditions stretched back to I-285 until the investigation was moved to a right shoulder at about 11:15 a.m.
The incident began when an Atlanta officer from the motorcycle unit tried to perform a traffic stop on a Chevrolet Impala that was traveling in the HOV lane, according to the Georgia State Patrol. Instead of pulling over to the right shoulder, the Impala driver reduced speed and began to stop on the left shoulder, which had a concrete median barrier and was not wide enough for the entire car to fit and move out of traffic. As a result, the officer had to stop the motorcycle in a regular travel lane.