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wyliepoon

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Cheap blue lighting could be used to stop subway suicides instead of expensive platform screen doors? The TTC would love to hear this...

http://inventorspot.com/articles/japan_fights_train_station_suicide_blue_led_lighting_32608

Japan Fights Train Station Suicide with Blue LED Lighting
by Steve Levenstein


Feeling blue? Japan's railways and subways have come up with a bright idea to reduce the number of suicides at train stations: eerie blue LED lighting
that supposedly has a calming effect on suicidal psyches.

Suicides at Japanese train and subway stations are a sadly regular occurrence that, besides being a human tragedy, delay thousands of commuters who depend on the nation's famously punctual trains and subways.

How bad is it? Statistics compiled by one of the country's largest train companies, JR East, show that suicides occurring at it's stations rose from 42 in 2006 to 58 in 2007 and 68 in 2008 - a truly worrisome trend.

Train and subway system operators have installed anti-suicide barriers at many stations but as they don't stop those determined to end their lives so horrifically, the companies are trying out a new tactic: blue lighting on station platforms.

First used at crossings on West Japan Railway Co.'s Hanwa Line in December of 2006, banks of bright blue LED lights have begun to appear at stations in Yokohama, Saitama and Tokyo.

Although evidence that blue lighting actually can uplift the moods of suicidal individuals is hard to come by, Japan's railway lines are hoping that the rumored "calming effect" induced by the color blue will be enough to change at least a few minds and, as a result, save lives.

JR East has set its sights on Tokyo's ring-shaped, green-tinted Yamanote Line with 7 stations already equipped with blue LED platform lights. The company expects to finish installing the light banks on the remaining 22 stations on the line by the end of October, complementing the physical suicide barriers already in place.

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I believe this article speaks of very intense blue light, such as (as it mentions), direct exposure to sunlight and electrical arcs, such as with arc welding equipment.. I doubt blue LEDs packs that sort of punch...

"....and light-emitting diodes...."

it's right in there.
 
"....and light-emitting diodes...."

it's right in there.
Yeah, LEDs can be killer for your eyes, and they can emit a lot of UV, which will destroy your eyes and your skin.

An easier and safer thing to do would just be to put blue in stations. Have blue pillars, or blue walls. Blue tunnel walls or pillars would be best, cause people would be getting calmed basically as they face their death. Even something like blue tickets or blue posters would be a big help.
 
It could be me, but the blue LED lights at the south end of St. Andrew on the TTC is kind of depressing.
 
"....and light-emitting diodes...."

it's right in there.
According to the abstract,
The sun, arc welding, plasma cutting and the arc of discharge lamps were found to have extremely high effective radiances [...], suggesting that viewing these light sources is very hazardous to the retina. Other light sources were found to have low effective radiances under the study conditions and would pose no hazard, at least for short exposure times.
Thus, blue LEDs are included in the "other light sources" which are not considered hazardous by the study, though of course that doesn't mean blue LEDs couldn't be hazardous in some other ways.

Not that there is any substantial scientific evidence for the "calming effects" of blue light either.
 
It could be me, but the blue LED lights at the south end of St. Andrew on the TTC is kind of depressing.
Agreed. Whenever I pass by it, I always think that it's some kind of maintenance area that people shouldn't go into.

EDIT: But it could just be because those lights were done in a particularly bad way, which is believable.
 
EDIT: But it could just be because those lights were done in a particularly bad way, which is believable.

No, that's how there suppose to look.:( I could understand if they put it in the subway tunnels to replace the ageing fluorescent lighting which would make sense and look cool. But not on the subway platform.
 
According to the abstract,

Thus, blue LEDs are included in the "other light sources" which are not considered hazardous by the study, though of course that doesn't mean blue LEDs couldn't be hazardous in some other ways.

Not that there is any substantial scientific evidence for the "calming effects" of blue light either.


Blue light is visible light in the blue portion of the colour spectrum. The intense glare of light reflecting off snow or water contains blue light. Your eyes cannot focus clearly in blue light. Some scientists believe that routine exposure to blue light over many years may age the retina and increase the risk of blindness in some people over the age of sixty.

http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/prod/glasses-lunettes-eng.php#ab


Fortunately, healthy retinas have a wide array of built-in chemical defenses against UV-blue light damage. They bear such imposing names as xanthophyll, melanin, superoxide dismutase, catalase, and glutathione peroxidase. And then there are the more familiar agents vitamin E, vitamin C, lutein, and zeaxanthin. Unfortunately, these defenses can weaken with disease, injury, neglect, and age.

http://www.mdsupport.org/library/hazard.html#blue


so it doesn't seem to effect everyone in the same way.
 
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They should have swirling black and white circles to hypnotize all the commuters, not only would that stop suicides, feeling up women, petty crimes and stuff, but will also prompt the riders to board the train in a more orderly fashion to maximize ridership and save them from having to live through the hassle of commuting on those trains.
 

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