Japan may add noise to quiet hybrid cars for safety
July 3, 2009
A customer admires a Honda Motor's hybrid vehicle at a showroom in Tokyo. Japan's near-silent hybrid cars have been called dangerous by the vision-impaired and some users, prompting a government review on whether to add a noise-making device, according to an official.
Japan's near-silent hybrid cars have been called dangerous by the vision-impaired and some users, prompting a government review on whether to add a noise-making device, according to an official.
The petrol-electric vehicles, which in recent months have become the country's top-selling autos, hum along almost soundlessly when they are switched from fuel to battery mode.
"We have received opinions from automobile users and vision-impaired people that they feel hybrid vehicles are dangerous," a transport ministry official said.
"Blind people depend on sounds when they walk, but there are no engine sounds from hybrid vehicles when running at low speed" and on the electric motor, he said.
The ministry has launched a panel of scholars, vision-impaired groups, consumers, police and the automobile industry to discuss the matter.
"They decided to consider introducing a sound-making function" in petrol-electric hybrids when the 13-member panel held its first meeting Thursday, the official said.
They have not decided on what kind of sound should be used, only that it should induce a response of caution, he said.
"On the other hand, we should pay attention to residents (along roads) as hybrids are excellent in reducing noise," the official added.
The panel is expected to draw up a report by the end of the year. Its proposal will be discussed at the ministry's committee on automobile safety before it could be drafted into legislation.
Toyota Motor launched the world's most popular hybrid, the Prius, in 1997.
A cheaper, revamped Prius, rolled out in Japan in late May, has been a huge hit, drawing orders for 200,000 units, according to Toyota. It recently became the best-selling car in Japan's domestic market.
(c) 2009 AFP
Feb 08, 2010
The real risk is by focusing on just 'noise makers,' effective accident prevention systems such as radar and camera based systems are being ignored. These systems work not only for hybrids but all vehicles to reduce not only vehicle-pedestrian accidents but vehicle-vehicle accidents.
This effort seeks to legislate the least effective solution for a very narrow group, 5 blind fatalities out of 4,700 pedestrian fatalities per year, less 0.1%. There comes a time when sensible people need to spend time and resources on what works for everyone.
The USA National Highway Traffic Safety Administration (NHTSA) looked at this problem June 23, 2008 and held a hearing. The opposition research is available from the record found at http://www.regulations.gov by searching for NHTSA-2008-0108-0020. The supporting legislation, H.R. 734 and S. 841 needs to be stopped.
Bob Wilson, Huntsville AL
Adding a simple low range (20 meters) non intrusive bass frequency pulse for sight impaired will be a lot easier on the ears than most car engines. It may even have the added side effect of making us all feel happy as bass frequencies are proven to increase theta(?) brainwave activity that enhances the feeling of happiness and relaxation in most people. Hence the reliance of deep bass frequencies in all modern pop and dance music.