Fellow Massman here,
I was on the East Bay bike-path last Saturday. In RI MUPs are treated as roads, so pedestrians walk facing traffic. I had a roller blader come right at me, so I told her she was on the wrong side of the road. She yelled something back at me that I could not make out. Because she was on wheels I didn't look at her as being a pedestrian...was I wrong? I'm thinking wheels (skateboard, rollerblades, scooters) ride with traffic, not against?