I've seen them called "Stop Lines", "Balk Line", etc. The thick line painted on the road at a Stop Sign.

You're supposed to stop before the line, but a lot of the time there's a bush or other obstruction so you can't see any crossing traffic. You have to creep forward until you can see anything.

Is there a reason for this? Is it done on purpose? It makes sense if there's a crosswalk or something, but I see it a lot where there shouldn't be any pedestrian activity.