The color of the traffic light has its own important role.On the other hand, the brightness of the color is actually different, and it is designed to make yellow the most bright.Why is yellow the most bright?[Image] "UFO" appears in the city that emits three colors of light!Actually, I see a very rare rare signal (11 sheets)
Why is only yellow bright?
Regardless of cars, motorcycles, pedestrians, when passing on public roads, as a major premise, pursuitors or vehicles pass on the road traffic law, such as signals or police officers displayed by traffic lights. It must be obeyed to hand signals, etc. " In the past, the traffic light was a bulb signal using a light bulb, but in recent years, LED is progressing. In Article 4-2 of the Road Traffic Law, such a signal will continue to evolve, saying, "Public Safety Commission will install a traffic light in frequent intersections other than cyclic intersections and other places that are deemed necessary to prevent the danger of traffic. You have to try it. " Therefore, regardless of the road width, traffic lights are basically installed in places with high traffic or in places where accidents are high. The role of a traffic light is that the traffic time is determined by the direction of travel, and by separating it and passing through, it prevents collisions with other cars and pedestrians. The purpose is to switch colors at an appropriate timing according to the traffic volume, so that the flow of the car is smooth. Although it is such an important existence, the brightness of light seems to be different depending on the color. In the first place, the color of the Japanese traffic light is unified in order of blue, yellow, and red in order from the left. Although it is a common perception of everyone who uses the road, the meaning of the color of the traffic light in the car is that in Article 2 of the Road Traffic Law Enforcement Ordinance, blue can "go straight, turn left, or turn right". , Yellow and red are common and stipulated that they must not proceed beyond the stop position. However, in the case of yellow, there are exceptions, except that "when the yellow light signal is displayed, it is not possible to stop safely because it is close to the suspension position." According to the Japanese signal representative who manufactures Japanese traffic lights, the color of such a traffic light says, "The yellow in the middle is designed to make it the most bright." The color of the traffic light has its own important role, but why is yellow the most bright? The person in charge of the Japanese signal mentioned earlier said, "The yellow design is not specified by the government, such as the Ministry of Land, Infrastructure, Transport and Tourism." "One of the reasons why yellow is designed to be the most bright is that people with color -based abnormalities can be considered. For those who have color -sensing, red and blue may look like gray. It is said that there are people, and we use yellow, which is relatively easy to see, so that the dangers of "the signal will change to red" are recognized. " The design is designed because it is not determined by the law, but the result of these traffic light manufacturers considering the safety of the user. As many users can use the road safely, such ideas may be various.