Originally Posted by
OakLeaf
Do you have a steel frame? Where you ride, are the lights triggered by optical sensors, or the older magnetic induction loops? On a bicycle, particularly a non-steel frame (and even some motorcycles) you may not be able to trigger a light. In busier areas there may be a pedestrian crosswalk button that you can dismount and push. That carries its own set of risks - but at a lot of intersections, there's no button.
Most of the places I ride, the induction loops are slowly being phased out, and I am SO loving the optical sensors! But at many intersections, a cyclist may have no choice but to either run the light, or to do a right turn on red and then a U-turn which may be quite a bit more dangerous.