These must be markings left by some aboriginal North Americans.

{Hey, why don't you let me handle this one?}
[I thought I told you to go to your room?]
{Yea, yea. But the last time you brought this subject up, you made everyone mad. Why not let me try one time. I know how to say it without throwing hand grenades into the crowd.}
[All right, smarty-pants. Go ahead.]

This is the reasonable, sensible Miles.

[I resent that!]

These marks are called Dan Henry's. They are used by cycling organizations to indicate the route cyclists should take when they are riding their Century or other organized ride. Unfortunately, they last long past the ride. And they are unsightly. It's not as if roads belong to no one, they belong to all of us and it's up to all of us to preserve them for the next ones to come along.

Just as we all agree that cyclists shouldn't throw their Clif Bar wrappers along the road, perhaps we could all agree that they shouldn't spray paint the roads as well. The organizations which put on these rides go to great lengths to produce maps and route or cue sheets for the riders. Why not expect riders to use them? Perhaps that would enhance the experience of the ride. Not only would the riders enjoy the distance and scenery, but they could also fine tune their navigation skills at the same time.

[All right. Back to your room.]

This is the REAL Miles. If you must spray paint on concrete - start with your driveway. See how that will look next year.