A little traveling music, please!
It took a certain Mr. Shinoda, working with the Hokkaido Industrial Research Institute, to apply the sonic resonance theory in a unique way. Shinoda discovered that by varying the spacing between the cut grooves, the pitch of the sound would vary. It's somewhat similar to an old-fashioned music box that uses metal times and posts to play a tune when set in motion against one another. It might not be as soothing to the ear as your favorite CD, but considering it's being played by the "Goodyear Orchestra", it's really not all that bad!
Melody Roads are located in the provinces of Hokkaido, Wakayama and Gunma, and are well-marked by roadside signs and colorful painted "notes" on the roadbed itself. Drivers should be aware that the music, as it were, is ideally heard when drivers maintain a speed of just 28 mph - on a highway, yet.