Black and White lines on the interstate

I spotted these black and white dividers on the interstate I 70 in between Salina and Hays, Kansas, U.S.A.

A Google search reveals that these lines give enhanced contrast on very bright days with sunstrike.

It was about an hours drive from where the storm water channel is in the middle of the road. ( second part of the video )

I created this video with the YouTube Video Editor (http://www.youtube.com/editor)