TOKYO — Noisy children skateboarding on the streets. Couples arguing in their homes. People gathered on the sidewalk, gossiping for long hours. Some people would describe these activities as noise pollution. A new website in Japan has put perpetrators on a map, spurring debate about those who disturb the peace.

The website, DQN Today, describes itself as a crowdsourced guide to help house hunters avoid neighbourhoods inhabited by “stupid parents who let their children play on roads and parking lots”.

It is populated by maps visualising the dorozoku, or “road tribe”, a term that applies to people who block the way or wreak havoc in public.

Residents who find noise unbearable have found an outlet in the website, which collects anonymous gripes about neighbours and pins every grievance on an interactive map, creating an elaborate record of the irritating sounds and sights of Japan.

Noise complaints have increased in the capital, Tokyo, with police logging a 30 per cent increase between March and April last year. That’s when the government shut schools and advised residents to work remotely because of the coronavirus, causing some to become all too aware of homebound sounds they had paid little attention to before.

Outside, even though some play areas have been cordoned off during Japan’s state of emergency, most parks have remained open — and crowded.

The creator of the website initially responded to emailed questions Wednesday about the site but declined to give his full name. He said that the map was a less-than-subtle hint for residents — they know who they are, even though they are never named — and for government officials, who he hoped would pay attention.

The creator, who describes himself as a freelance web developer in Yokohama, Japan, and goes by Twitter handle @hotaniya, later stopped responding to emails.

The site started in 2016 and initially had a few hundred users. Since then, it has grown exponentially as it has stirred debate, especially over what experts say appears to be society’s growing intolerance for the sounds of children at play.

While many on social media have lauded the website for shedding light on the problem of noise, some parents find its approach troubling and fear a growing divide between families with children and neighbours who cannot stand them.

Among the 6,000 wide-ranging complaints, which cover subjects like parking violations, excessive swearing or stray cats, are many entries that single out areas frequented by unsupervised children.

Ms Saori Hiramoto, 35, an activist who successfully lobbied the Tokyo Metropolitan government to allow strollers in crowded trains in 2019, said that the map demonstrated a breakdown in communication and the fracturing of a society that was once interdependent.

“I really feel it’s so tough to raise kids,” she said, “People say parents should be responsible for child care, but it’s very difficult, especially for single parents. We’ve come to our limits.

“I think that the society or community should watch and raise kids as members in society,” she added.

Dr Akihiko Watanabe, a professor in the Faculty of Education of Shiga University, near Kyoto, said in an interview Wednesday that the map had the potential to harm children and teenagers by exposing places where they hang out unsupervised.

But some parents become defensive over complaints about their children, making it difficult for others to approach them with concerns, he said.

“In the past, parents apologised and discipline their kids,” he said. “But now parents get hostile against people who scold.”

At least 1,500 new users registered to use the map between March and April last year. One complaint reads: The gatherings “are terribly loquacious and noisy. I glared for a long time but they didn’t stop. Children are also left unattended and make strange noises”.

Another says, “Three or four children gather and play loudly during holidays, and a high-pitched voice echoes in the neighbourhood.”

“I forgot that this was a road,” another user wrote about a stretch of asphalt frequented by skateboarding preteenagers.

Experts see a growing intolerance toward children at play as some in the country’s ageing population become less familiar with the sounds of small children. Over the years, residents in various districts have campaigned against the construction of nursery schools, even as parents have called for more affordable day care options and economists are worried that people in Japan, which has the oldest population, aren’t having enough babies.

Kobe residents sued a nursery school in 2016 over playground cacophony, but the case was dismissed in 2017.

Public parks are plastered with signs prohibiting all sorts of activities in response to nuisance complaints from residents. The Nishi-Ikebukuro Park in Toshima, Tokyo, has drawn attention for its bans on 45 different activities, such as skateboarding, jumping rope and soccer. A local official said the bans stemmed from a decade’s worth of complaints.

Dr Ko Fujii, founder and chief executive of public affairs agency Makaira and a visiting professor at Tama University’s Center for Rule-making Strategies in Tokyo, noted incidents in recent years in which disgruntled commuters harassed mothers who carried babies on public transportation.

The father of two young children, Dr Fujii said that he had plastered a sticker bearing the slogan “We love babies, it’s OK to cry,” in order to show support to fellow parents.

“I think some people are purely just so frustrated with city life that they can become this insidious,” he said. THE NEW YORK TIMES​