Brilliant bit of design. Even before the symbols were explained, you could immediately tell what they meant just looking at the b-roll at the beginning of the video -- that, to me, is a testament to just how well these crossing aids were thought out.<p>As an aside, I love that they call them "refuge islands" (a place to take refuge from the danger and chaos of motorized traffic), in contrast to what I hear in the US: "medians".