Around a quarter of a million people use Victoria Station in London each weekday.
And for the past few months, theyve been hearing an unusual voice.
Meet the stations newest and youngest safety announcer - nine-year-old Megan.
Her proud parents both work at the station.
Hello, everybody and please listen up. Take care on the escalators. Hold onto the handrail and your luggage.
Megans recorded announcement is designed to tackle a serious problem.
Around 10 people a day get injured on the underground network.
What we have noticed is that when people do injure themselves, its typically because theyre not taking enough care when using stairs and escalators.
At Victoria alone on average, 15 people a month are injured this way.
For some passengers at least, Megans message seems to be getting through.
I think everyone takes notice when a child says something. And because they don’t… they always mean it!
So what does someone who studies the psychology of the human voice make of this?
Research shows that deeper adult voices are perceived by humans as having more authority than higher voices.
So a child’s voice wouldnt have that authority.
But perhaps its the shock factor of using a childs voice.
It may be just a short-term result from this shock factor.
也许这只是 “震惊因素” 的短期效果。
But the station says injuries have dropped by nearly two thirds since Megans announcements started.