Sunday, October 10, 2010

What's this and why is it important?

Do you see the triangle of gravel in the picture above? The 90 angle is caused by the sweeping action of south-bound and west-bound vehicles pushing the gravel to the inside. The arc-like base of the triangle is caused by right-turning vehicles pushing the gravel to the outside. There the gravel will stay until a street sweeper comes by on its annual (if ever) mission.

Imagine bike lanes again, that are seldom or never swept. What falls there stays there.

BTW: The cost of sweeping bike lanes? $1,000 a year per linear mile, plus or minus a few hundred dollars. See why they don't get swept? A 200 mile bike lane system could cost $500,000 a year just to sweep... in a City that can't even afford to replace stop signs when they get knocked down.

4 comments:

Keri said...

"What falls there stays there."

And what falls elsewhere gets swept there, also.

Khal said...

That comment on debris management, reaffirmed by Keri, is why I would suggest wide outside lanes as being preferable to bike lanes. They self-maintain, and in addition, don't arbitrarily set a location where cyclists must ride. That makes the cyclist think about lane position--which is a good thing.

Steve A said...

There is a corner like that near my house. Since I have to turn right at the corner, I must be careful not to let my turn swing too far or I'll have to deal with the debris. It's no big deal if I'm in the Land Rover, but much dicier on the bike.

Tim said...

And I was feeling sorry for myself down here in Austin. I didn't mention the nice piles of gravel (and auto accident glass) that grow in our lanes.

http://oldguy2wheels.wordpress.com/2010/10/11/adventures-in-the-bike-lane/