As with most changes in behavior, it takes time. One article (ACS: Bike Commuting Continues to Rise | League of American Bicyclists) calculates that there has been a 61% increase in bicycle commuting between 2000 and 2012. I have seen other studies that place that number as high as 70%. I commute, in part, by bicycle and have noticed a dramatic increase in others doing the same over just the past two years. The local mass transit system here used to have no accommodations for handling bicycles. Now, all buses have a front rack that holds at least two bikes with newer racks being installed that hold three. The county rail system used to relegate bikes to one car and bikes would be bumped off if that car could be filled with non-bikers. Now, bikes are allowed on any car and riders are never asked to get off, no matter how packed the cars are. We also have a tri-county rail system that used to barely tolerate bicycles. Now, bikes are allowed on every car and they are planning to add special cars to each trip that are set-up specifically to carry bicycle commuters. The county also has a greenway plan for completion and expansion of a very nice bicycle path system. So, change has been slow in coming but as the number of bicycle commuters increases, the area I live in seems to be responding positively to the trend in terms of accommodations.