For all you kids out there who aren't hip to the latest traffic engineering lingo, RRFBs are Rectangular Rapid Flashing Beacons. Ann Arbor's about to get 5 sets of them. You can read more on the Chronicle and the Com. The purchase of the RRFBs was authorized at last night's City Council meeting. The City Council also tweaked the wording in the pedestrian safety ordinance. Now automobiles are required to yield the right of way to pedestrians who are waiting to cross, rather than stop for pedestrians who are approaching the intersection. Personally, I think it's a good change to a law that has the right idea: we should make pedestrian commuting easier and safer, even at the expense of our beloved automobiles. Based on the comments on the Com though, a lot of people are pretty pissed off about cars having to yield to pedestrians waiting to cross at marked cross walks. Go figure.