4 ms·
actually, they don't use weight, the sensors they use are inductive coils - so if you take a strong neodymium magnet and wave it above the coil it should hopefu
by viggity 16y ago
actually, they don't use weight, the sensors they use are inductive coils - so if you take a strong neodymium magnet and wave it above the coil it should hopefully trip it
http://www.wikihow.com/Trigger-Green-Traffic-Lights http://www.wikihow.com/Trigger-Green-Traffic-Lights
- aeontech 16y agoInteresting, I had no idea. I did wonder how much trouble it would be to place sensors under the roadway; this makes for a much more elegant solution.