They use close circuit cameras to control the traffic lights
brown avenue, bruce dressel, buckboard trail, by jonathan athens, cameras, computer, contact jonathan athens, control, corrine hawkins, dan edwards, days, dressel, dressel said, dynamite boulevard, indian school road, intersections, motorists, new cameras, pima road, ramsey, scott levinson, scottsdale, signal, signals, steven ramsey, telephone, traffic, traffic signal, traffic signals