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This Autonomous Snow Blower Shovels on its Own, Recharges Itself, and Keeps Going
(www.carsandhorsepower.com)
This is a most excellent place for technology news and articles.
It also runs over children and small animals indiscriminately! Not one mention of safety features in the entire article is concerning.
If you go the the manufacturers website it mentions several safety systems; radar, camera and a physical bumper and grate to keep things from getting into the machine
Radar & camera can be degraded by snow/ice buildup. A grate that lets wet snow in is also going to be big enough to let rocks and other debris in.
The camera is heated so that should not be the biggest problem. I don't think they have the software to make it work.
I have not had obstacle detection work on the other modules aside from a person being nearby being detected. With that feature you will not see it working from close by, but it will destroy children's toys, drive over poop, destroy its own antennas by driving under tables, drive against tractors, ...
It could be capable one day but not with this software (team).