From what I've seen (which is, of course, anecdotal) it's done pretty much nothing. Cyclists still ride on the road next to the bike lanes and still ignore most traffic signals. I'm all for less pollution and staying in shape, but I can't really get behind building infrastructure for a community who are making the road significantly more dangerous. Not to mention the... interesting(?) conversations you'll have if you ever try to argue against specific[+] dedicated bike lanes or mention that cyclists compulsively break the law under the guise of "safety."
[+] as in, "Since Smith is 2 lanes each direction with a dedicated turn lane and is parallel to and has the same speed limit as Mimosa, while Mimosa cuts through several residential neighborhoods, has the same speed limit but is one lane each way with no dedicated turn lane: Why not Smith St. instead of Mimosa Ln.?" perhaps they have a problem with my runons, not my ideas :P
I'm not sure which side you were arguing for in this case, but Mimosa seems like a good candidate for a bike lane. Look at Berkeley's bicycle boulevards if you want to see an example of how driving-unfriendly roads are a great place to put bicycles.
I think driver's ed classes should cover cycling, both to give drivers empathy for cyclists, and so they know the rules apply to cycling.
Also, cyclists are not obligated to use the bike lane. It is often filled with debris, or located right next to parked cars which would be dangerous to ride next to.
Transportation in Manhattan used to be a solved problem with walking + subways. I applaud someone getting exercise, but I wish that during their recreation they wouldn't plow into pedestrians who actually need to get somewhere.
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