I didn't know much about modulators when I got back into riding 5 years ago, but it was one of first things I added to used/ebaybike I bought. I ride in heavily congested Northern VA, DC area, and want every tool I can to reduce my invisibility to other traffic.
1. I read that the most common cause of crashes involving other vehicles is oncoming people pulling out in front of you. With my modulator on, I
rarely ever have that happen. I ride year round, maybe 10k/yr. I maybe have someone pull out once or twice per year. For that sake alone, I'm willing to be a tiny bit annoying to others.
2. The Signal Dynamics modulator I have can be disabled by flipping headlight from Hi-->Lo or Lo-->Hi and back within 1 sec. I know riding in groups the modulator can bug other riders. I usually ride solo, so it's not an issue for me. But I turn the modulator off in those situations:
- riding with other bikes
- stop/go traffic
- pulled up behind another vehicle at long stop light (even w/o modulator, turn from high beam to low)
3. Rarely have anyone point out to me that my headlight is flashing. Maybe twice a year? Even then, it's someone trying to point out a possible malfunction. I mention that it's a safety feature to make my bike more visible since bikes have a small visual footprint. Have not had a complaint. I don't see people jerking their head around, staring, taking their eyes off road to figure out what that flashing light is.
4. Have not had the situation (or excuse) of having another rider pull out, thinking I was flashing my lights to have them do so. Really, I don't see how you can confuse the two. I agree that people would use it to excuse their total cluelessness.)
5. I consider it a side benefit that I occasionally have someone thinking I'm a police officer and they pull into another lane to let me pass. Thank you for giving way to let me pass!
;-) Again, that does not happen often.
6. I don't do it to annoy other riders or drivers. It is a tool to make myself more visible and to keep the crazy drivers from plastering me on their grill. If that annoys a very few riders or drivers, I think that is more than fair trade off.
My only "Rant": It's a more rational safety tool than the moronic and baseless argument that 'Loud Pipes Save Lives' without a shred of proof or logic, and much more annoying. This works.