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In the world of autonomous vehicles, Pittsburgh, Phoenix and Silicon Valley are bustling hubs of development and testing. But ask those involved in self-driving vehicles when we might actually see them carrying passengers in every city, and you'll get an almost universal answer: Not anytime soon.
An optimistic assessment is 10 years. Many others say decades as researchers try to conquer a number of obstacles. The vehicles themselves will debut in limited, well-mapped areas within cities and spread outward.
Crash - Arizona - Uber - Vehicle - March
The fatal crash in Arizona involving an Uber autonomous vehicle in March of 2018 slowed progress, largely because it hurt the public's perception of the safety of vehicles. Companies slowed research to be more careful. Google's Waymo, for instance, decided not to launch a fully autonomous ride-hailing service in the Phoenix area and will rely on human backup drivers to ferry passengers, at least for now.
Here are the problems that researchers must overcome to start giving rides without humans behind the wheel:
Pavement - Snow - View - Lane - Lines
When it's heavy enough to cover the pavement, snow blocks the view of lane lines that vehicle cameras use to find their way. Researchers so far haven't figured out a way around this. That's why much of the testing is done in warm-weather climates such as Arizona and California.
Heavy snow, rain, fog and sandstorms can obstruct the view of cameras. Light beams sent out by laser sensors can bounce off snowflakes and think they are obstacles. Radar can see through the weather, but it doesn't show the shape of an object needed for computers to figure out what it is.
Part - Vision - Raj - Rajkumar - Computer
"It's like losing part of your vision," says Raj Rajkumar, an electrical and computer engineering professor at Carnegie Mellon University.
Researchers are working on laser sensors that use a different light beam wavelength to see through snowflakes, said Greg McGuire, director of the MCity...
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