What is difficult for lidar are the following: * not-reflective / dark surfaces, i.e. http://www.thedrive.com/tech/9293/luminar-says-its-lidar-tech-will-help-s

What is difficult for lidar are the following: * not-reflective / dark surfaces, i.e. http://www.thedrive.com/tech/9293/luminar-says-its-lidar-tech-will-help-self-driving-cars-see-farther http://www.thedrive.com/tech/9293/luminar-says-its-lidar-tec... has 10 percent reflectivity at 50 meters. As stated in the article Luminar is able to do the same at 200 meters, but violating eye safety standards. We might introduce paint restrictions - http://blog.caranddriver.com/why-better-paint-coatings-are-critical-for-autonomous-cars/ http://blog.caranddriver.com/why-better-paint-coatings-are-c... - but it's not really acceptable to paint everything I think. :-) * fog and dust particles (already known since lidar use for aerial imaging). * interference with other cars not so much (much worse with radar). I don't know if soft/hard objects are so easy to recognize for lidar though! That's pretty challenging!