I captured them with the camera on my cellphone. Gimp was used to enhance the photo on the left, making the lines stand out a little more than they do in real life.
What the heck are they?
My suspicion is, they have something to do with the new way road salt is applied. Instead of dropping rock salt, brine is sprayed onto the road surfaces. And, if it works better, fine.
However, doesn’t this white stripe imply that concentrated chemistry is still sitting there? What are the long term implications for the roads? I’ve got no clue. Maybe nothing.
That white stripe must be something.