This story of unforeseen consequences of new technology reminds me of those energy-efficient LED traffic lights that couldn’t cope with snow.
Here’s The Guardian last year.
New law to tackle electric cars’ silent menace to pedestrians
They are green, clean and make very little noise. It is this latter quality, initially seen by many as a good thing, that has become an acute concern for safety campaigners, who fear that the rising number of electric vehicles constitutes a silent menace.
When they travel at under 20kph (12 mph) the vehicles can barely be heard, especially by cyclists or pedestrians listening to music through headphones. “The greatest risks associated with electric vehicles are when they are travelling at low speeds, such as in urban areas with lower limits, as the noise from tyres and the road surface, and aerodynamic noise, are minimal at those speeds,” said Kevin Clinton, from the Royal Society for the Prevention of Accidents.
But the days of silence are numbered. From July next year, all new electric and hybrid models seeking approval in Europe will have to emit a noise when travelling at low speeds. Existing vehicles are expected gradually to be retrofitted with devices.
So, it’s now ‘next July’, and has the situation improved?
Futuristic sounds to make electric buses safer hit wrong note
John Welsman, from the policy team at Guide Dogs UK, who attended a TfL presentation last month, described the sounds as “all very spaceshippy” and said he would prefer electric buses to be fitted with a canned recording of the old Routemaster bus.
Welsman added: “They did play us a sound like someone blowing bubbles through a pipe. That just wouldn’t work. And there was an intermittent bleeping sound like an email alert that would increase or decrease in rapidity depending on the the speed of the vehicle. It was very irritating.”
Buses that sound like e-mail, cars that sound like something out of Star Wars.
Electric cars could sound really weird thanks to new EU regulations
After mood boards, focus groups, and plenty of testing, Jaguar Land Rover (JLR) came up with a futuristic sound akin to a spaceship in a sci-fi film – a suitable representation of the modern, sleek vehicle. But then they tested it on people, rather than looking around for the oncoming car, they looked up – apparently wondering where the alien spacecraft was. “It was very futuristic and did cause people to look in the wrong direction… upwards rather than outwards,” says Iain Suffield, noise, vibration and harshness engineer at JLR …
Some carmakers are already trying to be a bit different. Citroen’s concept car, the Ami One, has a unique sound design for its AVAS. Here, the aim is to use a human voice — not to shout warnings to pedestrians while it glides by them, but as the basis for the sound, layering a male and female voice together into the sustained sound required by regulations. It sounds a bit like a digital backup singer, or a robot humming.
Perhaps they should copy these old electric vehicles and use the clinking of hundreds of glasses bottles.
Listen to the mesmerising sound of London’s new electric buses – Wired UK
“It’s meant to be super easy to listen to,” says Matt Wilcock, of Zelig Sound, which created the short track for TfL. It’s the first time the company has designed a sound for a moving vehicle, most of its work involves creating sound for TV commercials, films and games. “This approach of it being rhythmic and having a beacon sound has not been considered before. We wanted it to be nuanced enough that even people who are into music and sound are still going to appreciate it but also it has to be loopable, constantly.”