Originally Posted by
The Human Car
IMHO The people that make coments that you can't adjust these things are: 1] never tried to adjust one to actully see if it can work or not and 2] are under the mistaken belief that they work differently then what they do. Which is to say the adjustment is more like a squelch on a radio, it should be set just high enough to remove backgrond noise and not so high only those broadcasting right next to you come through.
I have assumed the same, but don't have any knowledge. I would like to learn more about the guidelines, methods, tools, etc. used to adjust them.
I have on a few occasional seen them placed in thru bike lanes with the sweet spot (actually line) marked -
example right here. In these cases they appear to be quadrupole type. Interestingly these sensors are adjusted and do work for bicycles and there are traffic lanes to the left and right of these sensors which are closer to the bike lane inductive sensor than two adjacent lanes would normally be and there does not seem to be a cross talk issue. This leads me to believe there is quite a margin to set a sensor so it works for bicycles but does not get triggered by adjacent lanes.