Lucy MBike lanes are DRIVER infrastructure. Without cars there's no need for bike lanes - the whole reason for bike lanes is to protect people from drivers. The cost of bike lanes is part of the cost of driving.
looopToolsThey and intersection lights are also meant to protect cyklists from other cyclists, and before you say no. Yes, it is. I have now twice been rammed from the side because someone ran a red light on bike. One of the times it went really bad, I got a small concussion but the cyclist who hit me, broke his collar bone and got a really bad concussion.