The limited distance between the subject intersection and the interchange with Georgia 400, in addition to the volume of traffic merging into the right lane to access Georgia 400 northbound, presents safety issues that prevent the allowance of right turn on red movements from Rock Mill Road. Further, the volume of traffic utilizing Haynes Bridge Road minimizes the amount of green time that can be provided for smaller side streets along that corrdior while still maintaining the best possible flow along the main arterial.