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Revolutionary New Kind of Traffic Light

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Have you ever had trouble telling which lamp on a traffic signal is activated? Not knowing whether a light is red or green can be very dangerous, and it often happens when the sun is shining on a traffic signal. On this edition of J-Innovators, we meet the Takumi, or innovator, behind a revolutionary new kind of traffic signal that solves this problem. Traffic signals can be difficult to see when the sun's rays reflect on the mirrors inside a signal's lights. To prevent this from happening, the Takumi had to overcome two hurdles: preventing sunlight from reflecting off the lights, and ensuring that only the proper light appears illuminated to the human eye. Join us as reporter Michelle Yamamoto looks into the technology behind this bright new innovation!
Note: Due to the strict copyright regulations of NHK, this video has a high chance of getting removed.

Опубликовано:

11 июл 2013

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Комментарии : 31

@emergencyresponsevideosand4423 Год назад

I was super obsessed with traffic oights when i was 4 to 5 years old, i found this video in 2016, but i lost the video in late 2018, but i fpund it today. Today im 11 and actually found it

@cjsebes 7 лет назад

This video is about eliminating the sun phantom effect -- not distinguishing red from green for those who are color blind. But the arguments of red is always on top (or on the left) is irrelevant when it comes to driving at night, when you may not be able to see which indication is lit. Today's LED signals can be purchased from manufacturers as non-tinted, meaning that the signal appears clear when unlit, but illuminates red, amber, or green when lit.

@douglaswong6571 7 лет назад

Chris Sebes

@kocourmacek7216 2 года назад

I think it is in only in Japan/Eastern Asian countries, where the Red Light is on Right....

@buddyclem7328 6 лет назад

Nice video, but the audio track is inappropriate and does not match the video for at least half of the video.

@jbb3design 11 лет назад

3M done the same thing in mid 70s with their PV traffic signals. Leds traffic signals come in late 90s.

@Handleui 7 лет назад

very helpful technology. In dawn or dusk when the sun rays hit the traffic light and on the road, when you are driving, its hard to tell which light is glowing. I have been in one such accident myself making left turn and has been the worst regret in my life till date. Again it depends on which city you are in too, common in summer in BC or places near to Artic like in Japan as in the video and may not happen in tropical countries near the equator. Good to know about the Sun Phantom effect from this video ....

@buddyclem7328 6 лет назад

Ragavendra Nagraj Japan is *not* near the Arctic!

@Durrpadil 9 лет назад

Ms Yamamoto's English is very good. I need to keep up on my Japanese.

@houchou1 3 месяца назад

多眼レンズと面拡散薄型や〜

@starryfriend2511 2 года назад

why is the audio repeated

@marilenamatrone9663 6 лет назад

Al momento non

@brandonlopez4631 10 лет назад

Nice

@user-co3qh9eb4h 4 года назад

日本の信号機やぁ〜

@Guns_and_Saints 10 лет назад

He's late. Here in the U.S. our lights been upgraded like that over a decade.

@realimbored668 8 лет назад

LED modules eliminate the problen entirely

@dancoulson6579 7 лет назад

LED's have no effect on how badly the sun phantom phenomenon is exhibited. They're just a different source of light. If you were to use LED's in regular lens traffic lights, the sun phantom effect would still be present.

@HCkev 6 лет назад

Dan Coulson LED modules don't need a reflective cone to direct the light. That's what mainly cause the phantom effect. Moreover, LED modules are much much brighter than incandescent lights, so even when sun is shining on it, it's still brighter.

@powerwindow2 10 лет назад

yes...i under brightness may be the design factor for the new style light, but my arguement was for arrangement. the standard pattern is red, yellow, green for people...light my father...who are colorblind. that would ensure one would recoginize the directive of each light position even if one could not distinquish the colors. ask a color blind asian what HE thinks. also, horizon lights always are left-red, yellow, right-green.

@darlaalexander5638 9 лет назад

you can just look at the cross traffic

@jgharston 10 лет назад

Can't tell red from green??? But red's at the top and green is at the bottom! How on earth can you get that mixed up, you don't even need colours! In fact, the lights aren't even red and green, they are just /called/ red and green, "red" is shorthand for "stop" and "green" is shorthand for "go", you don't look for the colours, just the position.

@schutzdan23 10 лет назад

Some states don't do the vertical orientation

@Ascendance2001 9 лет назад

+dan schutz usually in canada at least left is red middle is yellow right is green

@schutzdan23 9 лет назад

Same here

@STL-Railfan 8 лет назад

+Jonathan Harston Even in the US, a handful of states use horizontal mounting of signals (Texas, New Mexico, and Wisconsin to name a few). The red is on the left and green is on the right. So not all places have the regular vertical set-up!

@dougreno3391 8 лет назад

+msk578 There are horizontally placed signals at the intersection of Virginia and Second in Reno NV

@powerwindow2 10 лет назад

forget the reflection....red is ALWAYS top or left. i guess in the land of the setting sun, light floods all of their traffic lights? congradulations, but this discovery is about as remarkable as a pop tart in a toaster. (insert slow sarcastic clap here) next up.....the automatic door.