Exactly. When the pavement is covered in snow the cameras & image software are going to freak out. 1. Not enough contrast to determine where the lane is. Or th

Exactly. When the pavement is covered in snow the cameras & image software are going to freak out. 1. Not enough contrast to determine where the lane is. Or the curb. 2. A previous car might have wheel-spun a trough down to the pavement, and now the image is reversed - all white, with black stripes.