comment: >
  
  Some lidar solutions can work better than others. But in my experience most automotive lidar solutions still have issues in foggy and dusty conditions.
context: “At least one person has been killed after heavy fog caused a pile-up of over 200 vehicles near the city of Zhengzhou, in central China.”
  Heavy fog is no joke.  Gets to a point of guessing what is in front. >
  
  I remember we were driving through a very foggy part on a highway when i was a child. We already saw crashed cars and many standing on the hard shoulder. Then someone was crossing the highway on foot, so my mother had to swerwe, crashing into another car standing on the hard shoulder.
  Don't drive there, and don't walk on fucking highways when nobody sees shit. Stay behind the crash barriers, because you ain't safe anywhere there, even in a car
  (Edit: Tbf maybe the person might just have escaped from their own crashed car... idk. But my mother should've been wiser and we should have stopped earlier.) >
  
  Wow and I thought the ones we have right down the road were terrible.(I41 WI) >
  
  It seems like everything in China is scaled up. >
  
  China continues to be exotic ... difficult to imagine a 200 car pile up ! >
  
  Ban self driving vehicles >
  
  Ironically, most self driving cars use LiDAR so fog wouldn’t affect them. Only Tesla relies solely on optics.
  Edit: to stop the pedantics below, water vapor in the air can affect LiDAR, it still functions though and considerably better than a human or an optical camera in fog. >
  
  Lidar really doesn't work any better than regular cameras in foggy conditions. You would need radar for that. >
  
  >downvoting the comment that's right
  Never change, reddit. >
  
  That’s cause he’s wrong. 
  LiDAR is less effective when there is water (in this case vapor) to scatter the lasers but it’s way better than an optical camera and in turn way better than an eyeball.