Distinguishing the edge of the road
Ralph, in the Fall, the DOT folks place large poles with reflective paint on them along the shoulders of roads to serve a guides for snow plow operators so they know where to go when there is nothing but flat whiteness. Streets with sidewalks usually have enough signs sticking up to help show where the road is, but it would be pretty frightening to drive a snow covered route without having an inkling of what it looks like under the snow.
For a long time we did not have reflective lane markers on our Beltway and other highways because they used to be surface mounted and the plows would scrape them up with the snow. Then there was an advance in technology and recessed reflectors were installed to mark the lanes. YAY!
Ralph, in the Fall, the DOT folks place large poles with reflective paint on them along the shoulders of roads to serve a guides for snow plow operators so they know where to go when there is nothing but flat whiteness. Streets with sidewalks usually have enough signs sticking up to help show where the road is, but it would be pretty frightening to drive a snow covered route without having an inkling of what it looks like under the snow.
For a long time we did not have reflective lane markers on our Beltway and other highways because they used to be surface mounted and the plows would scrape them up with the snow. Then there was an advance in technology and recessed reflectors were installed to mark the lanes. YAY!