[sliken]

Sure. Problem is cameras are more similar to humans. So a camera based system will drive more like humans, and be less dangerous. If you use a Lidar based system and conditions are great for lidar, but terrible for cameras it's going to be very dangerous to mix autonomous lidar cars with human driven cars.

[dragonwriter]

That's why you should have LIDAR and cameras, if nothing else so the car can use the cameras to predict and adjust to the condition-driven changes in behavior of the human drivers.