the only really successful pedestrian bulb-outs I’ve seen in Europe (the NL, DK,…): the bulb-outs are more of jutted-out islands, cut-out with straits as continuing bike lane allowing safe bike-only right (or left)-turns and straight paths. (v__v;; i didn’t take any photos of that when I was in europe in 2010-11)
photo from Edinburgh, UK by the Magnificent Octopus, 01.07.12. "What a bloody trambles!" — Edinburgh tram project.