Originally Posted by High Country Herb
I think the headlight modulator (especially if it deactivates at night) is an overall benefit. The argument against it is that people will panic, thinking you are an emergency vehicle, and end up crashing themselves or you. Does that happen to genuine emergency vehicles very often? I don't know.
I had people stop to yield to my EMS rig, then watched other people plow into them from behind. Many of them were driving too fast to stop even if they HAD been paying attention, or if they had even cared. Some had to have seen my lights from a good ways off, sitting at the edge of the intersection waiting for cross-traffic to stop, yet they still didn't reduce speed.
Hi-viz and lights work for the drivers that care and are paying at least a little attention. They don't work for many that aren't paying attention and/or don't care. Stay vigilant to avoid THOSE people.