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The lanes are great. Love them.

I think they might have the lights/signals off. They were working last week, but I gotta say, horribly timed. They sent bikers across 16th street when drivers on U St got their yellow. This led to me (going south) almost getting hit by a bus trying to beat his yellow light and make a left onto 16th.

When they do get the lights going again, I hope they will allow bikers to start crossing 16th at the same time pedestrians do. Making us wait until cars are finally able to make lefts/rights is a horrible idea.

Thanks for the even-handed explanation of the FHWA MUTCD experimentation process. Too often, the dominant narrative is just about it stymieing innovation.

Yes, the sensors don't work as they should. This might be the District's first stab at sensors for bikes.

The second day after the new signals were operational, I got to the intersection via NH Ave northbound to find another cyclist stopped in the painted zone. The signal failed to give us our turn and he grumbled. He told me that he was a consultant who had designed the intersection.

I lived out in Portland, OR for a few years and they have several intersections with sensors for bicycles. Theirs work a bit more reliably. They also mark the center of the sensor with a small target, so you know exactly where it is, rather than painting the whole area as done here.

One suggestion: while you're stopped on your bike, look for the seams in the pavement where the loop coils are installed. Try to get your pedals/chain directly over this spot. Especially if you have a composite frame, it can really help to lean the bike down--almost on its side--to get as much metal as possible near the loops.

This article discusses Washington state. This is also how it's done in Oregon:

http://bikelaw.wordpress.com/2009/05/02/breaking-news-in-washington/

can we learn nothing? the dutch use loop detectors on most of their bicycle routes throughout the country. especially the fully separated ones. Why can't we reverse engineer or something if the requirement is built/final assembly in USA? seriously reinventing the bloody wheel every time!

Ive used bike sensors in california and they work flawlessly. From what I can tell, theyre just like car sensors, but instead of a circle, a dense series of crisscrossed lines inside a square. You can see the lines in the picture above, and DC seems to have gone with a very simple triangle....possibly not strong enough.

The double yellow was certainly the right choice, although I would have striped it.

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