Originally Posted by atbman
The sensitivity of the detection loops shouldbe adjustable. If it is not responding to your presence, the local highways dept should be able to adjust it. Or they do in my localcity in UK.
If they can't do it, the technology is deficient/backward and should be replaced.
This is true, many detector loops are adjustable, and many localities, mine included, will at least attempt to help you. I contacted the City of San Jose Dep't of Traffic and they adjusted one signal at my request, now I can trip it with my bike. They don't always do this, because if they adjust it to be too sensitive it can get tripped by traffic in the adjacent lane which they don't want. But a lot of times they can find a balance.
They also told me that as part of a "general plan" for bikes that is being worked on in San Jose over the next few years, they will be installing bike-specific detection loops for many intersections where there aren't any or where they are using older loops. Nearby cities (Cupertino, Los Altos, others) already have these, clearly marked with a little bike and lines where you are supposed to put your wheels. I think they're great.