So several (and I mean SEVERAL) months ago we noticed new signage along the M'boro greenway but couldn't figure out what some of the symbols meant. I could guess that N meant North and S meant South but L? and B? Well we finally found the sign that explains the new symbols and it all makes sense now. Plus, it allows for much more safety as you can tell that they updated the milage indicators to work with GPS coordinates for emergency services. Let me once again mention I *love* the Murfreesboro Greenway!