A new traffic signal designed to improve safety and increase traffic flow, especially for left-turn movements, could become operational today for two of three legs at the intersection of Ga. 53/Dawsonville Highway and Sardis Road in northwest Hall County. “A review of the intersection showed the need for left-turn arrows to enhance the traffic flow and overall operation of Dawsonville Highway,” said Bayne Smith, the Georgia DOT’s district engineer. Known formally as four-section flashing yellow arrow signals, they are being installed at intersections statewide that have historically heavy left-turn traffic volumes.