Man! Now could they just put one in from the foot of the Manhattan bridge all the way up 1st Ave? I'd be set. Oh, and some in downtown Brooklyn too. That's the worst part of my (7 and half mile) commute to midtown. Thanks. :)

I know a few hardcore bike people who refuse to use the existing bike lanes because they say that drivers use them as passing lanes, extra street space, etc, without paying any attention to the bikers in them, which makes them more dangerous to ride in than the rest of the street. Physical barriers definitely solve that problem... Ever since I biked around Montreal for a day, I've been a big fan of bike lanes with physical barriers... Although in Montreal they make the barriers out of curbs with big metal posts in them! A truck couldn't hit those cyclists if it wanted to!

And I have to say, as irritating as the hipster population in Williamsburg is, at least they're making bikes a more regular, visible presence in the city. Plus, they make the whole endeavor look cool... Now if they'd only wear helmets.

On the roadway it's different, but it's a bit wasteful to spend precious bridge lane space on cyclists who could just as easily use a separated walkway (overbridge, underbridge, side-of-bridge) that doesn't have to be rated for tons of pressure per square foot. That space could go to more cars, or a mass transit lane, either rail or bus.

I'm fine with the weak plastic knockdown barriers I see here in MD pretty often - they do the job, without leaving twisted metal and broken glass all over the pavement every time someone bumps into one. They don't have to make the bike lane physically invulnerable, they just have to be cheap enough to put everywhere, and solid enough that the driver notices his bumper is getting huge dents in it.