Someone was riding his bike on a busy street yesterday evening as I was walking home from the subway. I was waiting for the light, and the cyclist was on the street with the light. Traffic was heavy, and he was occupying a lane and moving at about 4 mph, reading his phone, oblivious to all around him. I said, "Look up, look up, you're in traffic, look up, you're in traffic, look up, look up." He eventually heard me, looked at me, and proceeded. He didn't stop reading the cell phone, but last I saw him, he was heading (deliberately) for the back of a bus because it had pulled over at a bus stop, in other words out of the flow of traffic. I normally don't like to tell people what to do and what not to do, but he needed a wakeup.