Today, I was looking through my road photos from my Montreal, QC trip during the summer of 2008, and I noticed something odd about how Transports Quebec installs thier signals. They use different shapes! They obviously do this to help the color blind, since most overhead signals installed by Transports Quebec are horizontal. Red is a square, yellow is a diamond, and green is the standard circle. Here is a photo of mine that shows it on red (taken on QC 132 at QC 209 in Saint-Constant):
Is there anywhere else in the world that uses different shapes for lenses? Because now that I have seen my photos again, Quebec is the only place I know of that uses these shapes, and it would be interesting to hear of other places using them.
Ian
