The “Contrail” bike lane concept seems like a good idea on paper—where it will probably stay—however, it might not work so well in the real world. The idea of mounting a chalk drawing device onto a bike frame that creates “an impression based on the cumulative movements of many cyclists over time” is very communal sounding and all, but totally unpractical. Besides the confusing mazes of multicolored lines, chalk is also hard to see at night, making the bring your own laser bike lane still the far superior, albeit less participatory, choice when it comes to reducing your chances of getting run down. |Streetsblog|