My flasher that I use to flash people with works on both high and low beam.
It also has several intensity levels and is also hooked to the horn so even if you have it off and use the horn it also modulates the high beam for the duration of the horn use.
As for those that are brain dead and pull off the road, that is what the power and torque of the 1800 is for, just downshift and leave them sit back there.
If they do not know what a motorcycle and a modulator is by now, time they learned.
Lots of bikes have them now, I even see the sport bikes running them as of late.
Sorry, no sympathy from me for most drivers. I am running plumbing call tonight, I go out for a couple hours and then come home and wait for the next call, an I have seen at least four accidents so far just tonight. Had cars come up and around my right side and then dart in front and hit the brakes to make that exit . Had a van come across the center line at me , but I saw his front wheels coming across, no big deal, but I am on the road a lot and have not one bit of sympathy for them.
But I can assure you I watch them well.
Done good so far, I have over 200 miles a day for over 30 years in a service vehicle, that is a lot of miles and I have never had an accident. Many close calls, and have had them hit the service truck when it was parked at a gas pump and I was inside the store. Guy hit the big tow hitch and it bounced his little chevy citation back about five feet and there was plastic car all over the parking area.
Nope, no sympathy for them . The goal is to be seen. Combine that with some real good defensive riding and you have an even chance.
A modulator helps, but is not a cure all. I have had them look right at me and pull right out in front of me. And I have had them see me and stop.
I have even had them develop road rage and try to run me off the road one time .
Been running a modulator for seven years now.