Rumble strips

My older son, David Ricardo Palmer, works for 3M Canada, where he has won several prizes for his suggestions for new products. One of his ideas, which he did not submit to 3M, involves rumble strips.

Many secondary roads in the country-side of this area have rumble strips preceding stop signs. They make an intermittent noise as you drive over them and alert you that there is a stop sign coming up very soon. [digression: My granddaughter, Joan Robinson Palmer, says the rumble strips are there so blind drivers will know there is a stop sign coming up].

Anyway, my son's idea is that the grooves in the pavement should be spaced so they play "O Canada" as cars drive over them at the proper speed. Neat idea, eh?