Pavement Patty

A Canadian town unveiled a new type of speed bump to slow motorists near an elementary school.

Pavement Patty - an optical allusion, a new type of "speed bump"

The painting on the street is such that as the driver approaches, the image seems to rise upward as if it's a child running into the street, encouraging the driver to slow down.  See article here http://news.yahoo.com/s/yblog_upshot/20100908/od_yblog_upshot/canada-unveils-new-speed-bump-optical-illusions-of-children

Criticism was raised that not all motorists are capable of interpretting a 2-D rendering.  The rebuttal suggests that anybody who isn't capable of "seeing" Pavement Patty shouldn't be driving in the first place!

Astrid