High Quality Intelligent LED Traffic Light
Get Latest PricePayment Type: | L/C |
Incoterm: | FOB |
Transportation: | Ocean,Land,Air |
Port: | ShenZhen |
Payment Type: | L/C |
Incoterm: | FOB |
Transportation: | Ocean,Land,Air |
Port: | ShenZhen |
Model No.: Traffic Light
Brand: XIGE
Place Of Origin: China
Factory High Quality Intelligent LED Traffic Light
At the intersection, there are red, yellow, green and three-color traffic lights hanging on all sides. It is a silent "traffic police". Traffic lights are internationally unified traffic lights Led Lamp Beads. A red light is a stop signal and a green light is a go signal Led Bulb. At the intersection, cars from several directions gather here, some have to go straight, some have to turn, and whoever goes first is to obey the traffic lights In Line LED. When the red light is on, it is forbidden to go straight or turn left, and the vehicle is allowed to turn right without obstructing pedestrians and vehicles; when the green light is on, the vehicle is allowed to go straight or turn; when the yellow light is on, it stops within the stop line at the intersection or the pedestrian crossing line and has continued to pass; When the yellow light flashes, warn the vehicle to pay attention to safety
At first, there were only two colors, red and green. Later, after improvement, a yellow light was added. The red light means stop, the yellow light means preparation, and the green light means pass. The reason for using these three colors as traffic signals is also related to people's visual structure and psychological response.
The human retina contains rod-shaped and three types of cone-shaped photoreceptor cells. The rod-shaped cells are particularly sensitive to yellow light, and the three types of cone-shaped cells are the most sensitive to red light, green light and blue light respectively. Because of this visual structure, it is easiest for humans to distinguish red from green. Although yellow and blue are also easy to distinguish, because the eyeball has fewer photoreceptors sensitive to blue light, it is better to distinguish between red and green.
Traffic lights are not random.
According to the optical principle, red light has a long wavelength, has a strong ability to penetrate the air, and is more noticeable than other signals. Therefore, as a signal for prohibition of passage, green is used as a notification signal because the difference between red and green is the largest, and it is easy to Distinguish (red-green color blindness is a minority after all). In addition, color can also express some specific meaning, to express hot or violent, the strongest is red, followed by yellow. Green has colder and calmer connotations. Therefore, people often use red for danger, yellow for warning, and green for safety.
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