Every traffic light signal contains a sensor or a timer to assist it control traffic. Traffic Sensor is typically controlled by traffic lights that have timers in large cities where cars constantly cross busy junctions. On the other hand, traffic signal sensors (detectors) are typically favoured in suburban areas and on county roads because they can efficiently regulate the erratic traffic flow as well as identify approaching vehicles, a buildup of vehicles at an intersection, and vehicles entering turn lanes. These sensors employ a variety of technologies, including air-filled rubber hoses, induction loops, radars, cameras, and lasers.
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