In the town of Ísafjörður in Iceland, an experiment in getting the attention of motorists by painting pedestrian crossings in 3D is under way:

3D Pedestrian Crossing 1

3D Pedestrian Crossing 2

My suspicion would be that any impact the shock of seeing 'raised' obstacles in the middle of a road might have on drivers will soon fade unless there's a program of repeatedly changing the type of optical illusion being applied in a particular spot so as to prevent them becoming just another part of a familiar street's layout that drivers have mentally determined that they don't need to pay attention to. I'd love to be proved wrong on that.

[Via swissmiss]