March 28, 2024

Practice has proved that blue lighting can reduce suicide

As a countermeasure against suicide, the Utsunomiya Reservoir in Uji, Kyoto, Japan, adopted blue lighting in 2008, and in 2010, the number of suicides was zero again in 10 years. In 2009, there were 2 people, and in 2010, it was 1 person. In the reservoir, seven people have committed suicide in the past five months since July 2008. Therefore, measures such as replacing the 68-inch lighting of the reservoir with blue lighting that is considered to have suicide prevention effects have been taken.

The Tianzhu Reservoir with blue lighting is used. This is a sightseeing spot with 50,000 people visiting throughout the year. (Photo: Japan Ministry of Land, Infrastructure, Transport and Tourism)

Blue lighting is considered to have a calming effect, and its use in station platforms, railway level crossings, and street lights for highways is expanding for the purpose of preventing suicide, preventing accidents, and preventing crime. The Tianzhu Reservoir, with the participation of experts, studied the countermeasures against suicide. In December 2008, blue lighting was adopted. At the time, the Japan National Land Transport Bureau, the Ministry of Land, Infrastructure, Transport and Tourism, Japan’s Ministry of Land, Infrastructure and Transport, Yodogawa Reservoir Management Office, said: “In the face of the increase in suicides, we have adopted blue lighting in the mood of drowning people to save lives.”

In addition to the use of blue lighting, the Tianzhu Reservoir has also adopted a variety of measures to prevent suicide. For example, in the renovation project completed in April 2010, the side wall of the dam at the top of the dam was raised to 1.3 meters, 20 cm higher than before, and the handrail was changed to a shape that was difficult to cross.

In addition, the previous 24-hour opening was limited to 8 am to 5 pm, and 2 staff members were monitored. A monitoring probe and a human body sensing sensor are provided at the entrance. It is also equipped with benches in the square near the entrance, so that the eyes of the visitors who are resting here face the top of the levee and use the eyes of the people to suppress suicidal behavior.

Hiroshi Yasuda, director of the Yodo River Reservoir Management Office, said: "It's not just blue lighting, but comprehensive countermeasures have achieved results."

Edit: Sophy

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