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Comment by Rohansi

3 days ago

Cars don't drive in the dark. Roads are usually lit. And every car has its own lights for seeing where you are driving.

> Roads are usually lit

Not always. Definitely not all freeways.

> And every car has its own lights for seeing where you are driving

Not always far enough. Especially at freeway speeds on unlit freeways.

  • So how can humans do it?

    If humans don't have lidar but can drive it's an existence proof of the viability of that approach.

    • In addition to vision, humans have proprioception and kinesthesia, hearing, inner ear receptors for balance, a sense of touch, sense of smell. We use all of these sensory inputs when we drive. And even then humans get into lots of accidents.

      Lidar is superhuman vision.

      3 replies →

    • Humans can't do it safely during a proper blizzard. (Toronto doesn't really get proper blizzards, though).

Interstate highways and local roads are generally unlit outside of urban areas. But in fairness, Waymos don't operate in those places anyway.