Driving as in "following along the street" and obeying reasonable local
laws is a fine achievement, but it's not tackling the hard problems.
If they've driven for, say, hundreds of hours in real city traffic with
no intervention? Okay, I'm impressed then. But from what I've seen, my
impression is that what they have is a "smart cruise control", so to
speak -- it'll drive itself, mostly, based on reasonable assumptions,
and the human is there to perform the harder tasks and intervene in
situations the normal cruise doesn't address.
Wonder if they've published on it... don't immediately see any journal
articles, but Google is a pain in the ass word to search on for obvious
reasons.
I did see a more casual IEEE article, with several interesting points:
"Urmson, who is the tech lead for the project, said that the "heart of
our system" is a laser range finder mounted on the roof of the car. The
device, a Velodyne 64-beam laser, generates a detailed 3D map of the
environment. "
Whoa. Yeah, that's gonna help. And HURT. Velodyne's system costs about
$75k. We use laser scanners in our unmanned work, and they have some...
very interesting limitations.They are very good at getting rangefinding
scans of the environment around them -- under good conditions. Also,
mechanically there's a whole bunch of questions in terms of long term
operation, but that's basically engineering (though not easy engineering).
But there are some conditions that kill them pretty dead -- in terms of
scanning, that is, regardless of how well it works; I'd want them backed
up with other sensors, heavily.
"The second thing is that, before sending the self-driving car on a road
test, Google engineers drive along the route one or more times to gather
data about the environment."
Yes, having a human scout go ahead and survey your territory, sometimes
multiple times, prior to sending the robot down, cuts way down on the
challenge.
They don't give a clear idea of how much human intervention is
required, unfortunately, which makes it impossible to judge directly.
>
>> If Google really has cars that can be let loose to drive
>> themselves in real traffic, and don't need to be overridden by human
>> beings, why is it that the Army is still having significant research
>> being done just to get a damn convoy to follow the same path
>> automatically?
>
> Who knows? I'd *expect* Google researchers to do hugely better than the
> Army on software issues, though.
Not on targeted software for specific solutions. The Army doesn't do
this stuff by itself; it hires people. Say, like Google... to do the
work for them. They'll PAY for the research, and it's done under their
banner, but the work's generally done by civilian contractors. Like the
one I work for. ;)