Author Topic: Device that flashes the head lights during day light?  (Read 3517 times)

0 Members and 1 Guest are viewing this topic.

Offline Bill

  • Bicycle
  • *
  • Posts: 62
  • AREA: Southeast Area
  • COG#: forum
  • Membership Level: Forum Subscriber
Device that flashes the head lights during day light?
« on: January 18, 2012, 11:24:33 pm »
Anybody tried one?  How much did it cost?  How do you install it?
Thanks!

Offline Cap'n Bob

  • GOLD STAR
  • *******
  • Posts: 10956
  • AREA: Northeast Area
  • COG#: 7134
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #1 on: January 18, 2012, 11:27:23 pm »
Yes I use headlight modulators. They can be had from about $70, to over $100. I prefer the Kisan Pathblazer. It's basically plug and play.

Offline SAS Mayhem

  • Street Cruiser
  • ****
  • Posts: 701
  • AREA: Southeast Area
  • COG#: 9199
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #2 on: January 18, 2012, 11:29:07 pm »
Here you go, remember the search feature is your friend, ...........  :)

http://forum.cog-online.org/index.php/topic,21443.msg78841.html#msg78841

Cheers
Ron
COG & AMA Member
06 C10
09 C14

try to live a day without doing one of the 5 D’s....Deny, Defer, Deflect, Discount and Deceit...tougher than it sounds....

Offline RWulf

  • Crotch Rocket
  • ****
  • Posts: 1874
  • AREA: North Central Area
  • COG#: 7122
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #3 on: January 19, 2012, 12:53:09 am »
One of the best safety items you can install. Most are just plug and play.
Richard

Offline cra-z1000

  • Sport Tourer
  • *****
  • Posts: 2092
  • Keeping it upright..
  • AREA: South Central Area
  • COG#: 9790
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #4 on: January 19, 2012, 01:28:11 am »
I've noticed that people ahead of riders with flashing headlights slow down thinking it's the police so I'm not sure if I'd want that feature myself .
1987 C 10
80 Kawasaki KZ 1000 MK 2
74 Honda 750 four ss
73 Suzuki 550 triple
72 Honda 550 four

Offline 2fast

  • Crotch Rocket
  • ****
  • Posts: 1926
  • Red hair & black leather, my favorite color scheme
    • ZG Heat Shields
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #5 on: January 19, 2012, 04:23:04 am »
Hey Bill,
I think I have a modulator I removed from my bike that I would sell pretty cheap if you are interested. Ping me at bp snow at hot mail dot com if you want to discuss it.
Brian
Brian in Minnesota

Offline Piston720

  • Scooter
  • ***
  • Posts: 262
  • AREA: Northeast Area
  • COG#: 10213
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #6 on: January 19, 2012, 03:57:03 pm »
I have used a modulator for years and it is great.
It is a plug and play with the photo sensor on the windshield for night time disabling.
It is tied into the high beam
I have recently ordered a HID setup and was wondering if the modulator should be used.

Offline 2fast

  • Crotch Rocket
  • ****
  • Posts: 1926
  • Red hair & black leather, my favorite color scheme
    • ZG Heat Shields
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #7 on: January 19, 2012, 04:09:32 pm »
You can't modulate an HID.
Brian in Minnesota

Offline Piston720

  • Scooter
  • ***
  • Posts: 262
  • AREA: Northeast Area
  • COG#: 10213
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #8 on: January 19, 2012, 04:16:20 pm »
Thankyou 2Fast, I suppose that answers my question.
I will put it back on one of my GS's.

Online Nosmo

  • Sport Tourer
  • *****
  • Posts: 2129
  • "We're all in this together" -- Red Green
  • AREA: Northwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #9 on: January 19, 2012, 07:32:38 pm »
Modulators are like a lot of things, there is a time a place to use them and a time and place to turn them OFF.  I have one on each bike, and I have learned a couple of things.  There will be differences of opinion on their use, and here's mine:

I use the modulator when I am the first vehicle in my lane on a non-divided highway, to get the attention of on-coming drivers who might pass traffic in the opposing lane and not see me and pull into my lane.

I use the modulator when I am anywhere on a road with turn-outs, driveways, and places someone is likely to make the proverbial left-turn in front of me.  That's a lot of places.

I use the modulator when in cities or towns in traffic where there is a lot of intersections and left-turning traffic.

I DO NOT use the modulator when cruising behind a car or other motorcycle for a long distance as this just creates a pissed-off driver who eventually will pull off at a the worst possible place, and sometimes come back in behind me and aggressively tailgate due to modulator-induced road rage.  It happens.

I DO NOT use the modulator at 4-way stop intersections or other places that car drivers who don't understand it may interpret it as a signal that I am yielding right-of-way to them.  If you do this, you may find people pulling out in front of you because of the modulator.  The signal for yielding right-of-way is to turn your headlights OFF, then back ON, slowly.  You can't do that on a stock-wired motorcycle.  Car drivers for the most part know nothing about motorcycles and how they work.

99.7734 % of car drivers, and MOST LEO's do NOT know it is a modulator and think it is a headlight flasher (it is most specifically NOT, as FLASHERS are illegal, and in no case can a non-emergency vehicle have "wig-wag" headlights).  I "pulled over" a local cop once when I came up behind him on the freeway, and he thought I was trying to signal him to pull over, so he changed lanes, joggled in behind me, and lit me up.  We went to the shoulder, I explained the situation, he said that "civilians" can't have headlight flashers.  I explained the difference, I showed him the Washington State law and the federal statue (ALWAYS keep this paperwork on your bike with your license and registration info).  He said he had been a LEO for 18 years and had never heard of modulators.  We parted friends and I did not get cited for anything (good, because I had committed no infractions.)

Expect a LOT of people to pull over and yield to you, thinking you are an emergency vehicle, then get really, really pissed when they see you are not.  You may get into some yelling matches.

If you use one, use it judiciously and realize that it may in some limited cases actually cause you more problems than good.
2003 Connie    2007 Wee-Strom   

"What could possibly go wrong...click....go wrong...click...go wrong...click...go wrong..."

Offline RWJC

  • Road Bike
  • ***
  • Posts: 357
  • AREA: South Central Area
  • COG#: 9827
  • Membership Level: Expired - Expired Term
~RWJC
COG #9827
"Dress for the crash, not for the ride."
02'VN800-SOLD 59,348mi 02'ZG1000-GONE 05'Nomad-SOLD   05'ZG1000-(12/1)5500mi(1/1)8220mi

Offline Cap'n Bob

  • GOLD STAR
  • *******
  • Posts: 10956
  • AREA: Northeast Area
  • COG#: 7134
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #11 on: January 20, 2012, 08:22:09 am »
Sorry, but I disagree with a lot of these points. OR course these are just my opinions also.

      I still use the modulator behind cars and such (even if for extended distances). It's not to make anyone mad. But I still want on coming traffic or that driver in question (that I'm following) to know I'm there. They may tend to forget if your headlight is not reminding them. Then when passing, he may not be ready for you. Or in these days, he may not think about anyone being there when he misses his turn or such, making an erratic maneuver.
      I want them to know there is a motorcycle in close proximity (and where it is). As for the guy coming the other way. Your more hidden behind other vehicles that normal. I ride towards the left side of the lane to make my modulating headlight more visible to on coming traffic. I have had folks cut in front of me thinking it was clear behind the car that passed (not using the modulator). The modulator and lane placement drastically reduces those instances. So although I don't want to make folks mad. I don't want to die either. I have never had someone pull over then tailgate me, for using a headlight modulator.
      I use it at all intersections. Again folks actually see me and do not pull in front of me. When I do not have the modulator, it's like death race 2000. So sorry, I don't agree. A flashing modulator (continuously) has never caused me to have a person cut in front of me thinking I was flashing them to go. Only when I don't use the modulator. Because I am seen. A slow flash headlight might yield those results. But a flashing modulator is more to be taken as an emergency vehicle than a sign to go. Folks tend to yield for the modulator thinking it's an emergency (as you pointed out).
   Basically what it comes down to with me. When I turn it off, I have close calls, that start almost immediately. When it's on, I have little or no instances in all the ways you have described. I personally use mine all the time (except when another bike in front of me lets me know it bothers him). I find that I have the exact opposite of the points you have made. When I use my headlight modulator, I have few if any instances of folks pulling in front of me. When I do not have the headlight modulator on, I have constant instances of dangerous moves in all the places you said the modulator will cause. So sorry, I disagree on most your points.
   I'll use my modulator at all times. Even if it may annoy some folks. If annoyed, they still know where I am. And I've never had road rage because of it. Although I have had many folks I came up behind pull over (either being annoyed or thinking that I'm an emergency vehicle). So IMO, my experiences have been the opposite of what you described.   ;)


Modulators are like a lot of things, there is a time a place to use them and a time and place to turn them OFF.  I have one on each bike, and I have learned a couple of things.  There will be differences of opinion on their use, and here's mine:

I use the modulator when I am the first vehicle in my lane on a non-divided highway, to get the attention of on-coming drivers who might pass traffic in the opposing lane and not see me and pull into my lane.

I use the modulator when I am anywhere on a road with turn-outs, driveways, and places someone is likely to make the proverbial left-turn in front of me.  That's a lot of places.

I use the modulator when in cities or towns in traffic where there is a lot of intersections and left-turning traffic.

I DO NOT use the modulator when cruising behind a car or other motorcycle for a long distance as this just creates a pissed-off driver who eventually will pull off at a the worst possible place, and sometimes come back in behind me and aggressively tailgate due to modulator-induced road rage.  It happens.

I DO NOT use the modulator at 4-way stop intersections or other places that car drivers who don't understand it may interpret it as a signal that I am yielding right-of-way to them.  If you do this, you may find people pulling out in front of you because of the modulator.  The signal for yielding right-of-way is to turn your headlights OFF, then back ON, slowly.  You can't do that on a stock-wired motorcycle.  Car drivers for the most part know nothing about motorcycles and how they work.

99.7734 % of car drivers, and MOST LEO's do NOT know it is a modulator and think it is a headlight flasher (it is most specifically NOT, as FLASHERS are illegal, and in no case can a non-emergency vehicle have "wig-wag" headlights).  I "pulled over" a local cop once when I came up behind him on the freeway, and he thought I was trying to signal him to pull over, so he changed lanes, joggled in behind me, and lit me up.  We went to the shoulder, I explained the situation, he said that "civilians" can't have headlight flashers.  I explained the difference, I showed him the Washington State law and the federal statue (ALWAYS keep this paperwork on your bike with your license and registration info).  He said he had been a LEO for 18 years and had never heard of modulators.  We parted friends and I did not get cited for anything (good, because I had committed no infractions.)

Expect a LOT of people to pull over and yield to you, thinking you are an emergency vehicle, then get really, really pissed when they see you are not.  You may get into some yelling matches.

If you use one, use it judiciously and realize that it may in some limited cases actually cause you more problems than good.

Offline 2fast

  • Crotch Rocket
  • ****
  • Posts: 1926
  • Red hair & black leather, my favorite color scheme
    • ZG Heat Shields
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #12 on: January 20, 2012, 12:49:52 pm »
I am sure both of these will be illegal for non emergency use and could not be defended if you got a ticket for it. There are specific laws for flashing rate, and a requirement for a light sensor that disables it after dark.

I saw a product "similar" to this one on a vehicle...not as LEO attracting, but still gets attention...

http://www.ebay.com/itm/Led-Car-Day-Driving-Light-Strobe-Controller-A293-/380271285100?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5889ef536c#ht_3109wt_1143

or

I am considering there:

http://www.ebay.com/itm/4-x-3-LED-Car-Truck-White-Flash-Emergency-Strobe-Light-/400161777492?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5d2b802754#ht_1941wt_922
Brian in Minnesota

Offline Outback Jon

  • Sport Tourer
  • *****
  • Posts: 2206
  • AREA: Northeast Area
  • COG#: 9506
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #13 on: January 20, 2012, 01:11:58 pm »
I am sure both of these will be illegal for non emergency use and could not be defended if you got a ticket for it. There are specific laws for flashing rate, and a requirement for a light sensor that disables it after dark.
I saw a product "similar" to this one on a vehicle...not as LEO attracting, but still gets attention...

http://www.ebay.com/itm/Led-Car-Day-Driving-Light-Strobe-Controller-A293-/380271285100?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5889ef536c#ht_3109wt_1143

or

I am considering there:

http://www.ebay.com/itm/4-x-3-LED-Car-Truck-White-Flash-Emergency-Strobe-Light-/400161777492?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5d2b802754#ht_1941wt_922



Yep.  Both of those would be considered illegal if used while on the road.
"Outback Jon" Gould *** South Cairo, NY *** COG #9506 *** 2006 C10 "Blueline" *** CDA #0157 
2011 Subaru Outback 3.6R Limited - "Outback's Outback"

Offline Daytona_Mike

  • Sport Tourer
  • *****
  • Posts: 2391
  • AREA: Southeast Area
  • COG#: 13095
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #14 on: January 20, 2012, 02:12:23 pm »
 I do not like  modulators period.  Emergency vehicles sure. There is too  much confusion between  emergency vehicles and a  modulated (blinking, flashing pulsating- it all looks the same)  headlight on motorcycles.   People will think your telling on coming vehicles  to go ahead and turn left  or pull out in front of  you or they pull off to the side of the road or they hit the brakes.
  When we ride as a group every Sunday all modulators are to be turned off because they are very distracting.
If you want to be safe add some daytime driving lights. Driving lights  work much better and do not create confusion by other people thinking you are  trying to communicate with them or pretending to be an emergency vehicle. I have had personal experience with this same confusion.
« Last Edit: January 20, 2012, 02:23:18 pm by Daytona_Mike »
Normally aspirated engines have perpetual turbo lag
2000 Red C10 1052 kit 100+HP  + way more torque.
2008  C14 Silver Dammit Full AreaP- Flies are put back in SISF_Flash
2011  KLR650   688 piston ported and polished
2011  KTM 530    This thing is FUN!!

Offline Cap'n Bob

  • GOLD STAR
  • *******
  • Posts: 10956
  • AREA: Northeast Area
  • COG#: 7134
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #15 on: January 20, 2012, 04:12:22 pm »
   People will think your telling on coming vehicles  to go ahead and turn left  or pull out in front of  you or they pull off to the side of the road or they hit the brakes.
 


Again, the exact oposite experince. Folks pull in front of me only when I don't use it. And I've never had a problem with any type of road rage because of the modulator. All most all of any of the problems I have like these, are when I don't use the modulator. The modulator makes me visable. When I don't use it, I feel like I'm invisable!  ;)

Offline rick3foxes

  • Scooter
  • ***
  • Posts: 274
  • Apex, NC (USA)
  • AREA: Southeast Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #16 on: January 20, 2012, 09:19:51 pm »
Wow. Lots of contradicting opinions on the use of headlight modulators.
It looks to me that there's only one thing everybody agrees on:




...  a flashing modulator is more to be taken as an emergency vehicle than a sign to go. Folks tend to yield for the modulator thinking it's an emergency (as you pointed out).

  ...

 Although I have had many folks I came up behind pull over (either being annoyed or thinking that I'm an emergency vehicle).



I also agree with that assessment, and that's why I don't use it.
I do insist on multiple sources of light up front, so maybe that's why people don't constantly pull out in front of me.

Rick.
IBA #34853
2012 Alaska Trip Video: http://www.youtube.com/watch?v=T578lzlENSY
2014 Western Trip Video: https://www.youtube.com/watch?v=VJgillo35KA
"...miles to go before I sleep."  - Robert Frost

Online Nosmo

  • Sport Tourer
  • *****
  • Posts: 2129
  • "We're all in this together" -- Red Green
  • AREA: Northwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Device that flashes the head lights during day light?
« Reply #17 on: January 21, 2012, 01:19:57 am »
I expected differences of opinion based on experiences as I have had this discussion before on this board in the "old days" as well as other motorcycle forums I use.  The largest issue is, as usual, lack of knowledge and education of the OTHER drivers, specifically car drivers who do not understand the modulated headlight (and again, it is a modulator NOT a flasher).  This whole situation could be helped immensely if the states' Dept. of Licensing or Dept. of Motor Vehicles, or whoever is in charge of driver's education, would include some information about it in the driver's education info, and on the licensing tests.  If car drivers knew the intent was to be seen and not just to piss them off or get them to get out of the way, then that would help.  I have had several encounters with car drivers, one in particular in a Safeway parking lot that I thought might escalate to fists, until I calmed the guy down and told him I was NOT trying the get him to move over, (this was one of those times when I just happened to follow him all the way into the parking lot) and explained the modulator function, etc., until he finally got it and said, "So you're not tryin' to own the damned road, you're just worried about gettin' hit, right?"

Right.

To each his own.
2003 Connie    2007 Wee-Strom   

"What could possibly go wrong...click....go wrong...click...go wrong...click...go wrong..."

Offline ChipDoc

  • Sport Tourer
  • *****
  • Posts: 2706
  • Work to ride - Ride to work!
  • AREA: Southeast Area
  • COG#: 9934
  • Membership Level: Active
Re: Device that flashes the head lights during day light?
« Reply #18 on: January 21, 2012, 06:55:56 am »
I am sure both of these will be illegal for non emergency use and could not be defended if you got a ticket for it. There are specific laws for flashing rate, and a requirement for a light sensor that disables it after dark.
I saw a product "similar" to this one on a vehicle...not as LEO attracting, but still gets attention...

http://www.ebay.com/itm/Led-Car-Day-Driving-Light-Strobe-Controller-A293-/380271285100?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5889ef536c#ht_3109wt_1143

or

I am considering there:

http://www.ebay.com/itm/4-x-3-LED-Car-Truck-White-Flash-Emergency-Strobe-Light-/400161777492?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5d2b802754#ht_1941wt_922



Yep.  Both of those would be considered illegal if used while on the road.


I think it depends a lot on the jurisdiction.  Those flashers aren't exactly all over the place down here in Florida, but they aren't particularly rare either.  And they most certainly attract attention.

Offline RWJC

  • Road Bike
  • ***
  • Posts: 357
  • AREA: South Central Area
  • COG#: 9827
  • Membership Level: Expired - Expired Term
Re: Device that flashes the head lights during day light?
« Reply #19 on: January 22, 2012, 03:48:15 am »
As far as I know, if they are:
a) mounted BELOW the headlight.
b) nigtt/evening use not allowed.
c) NOT pointed directly at a driver

they are ok.

Same type of brake light I have, and same conditions. Mine is red. I have to bring my bike by State Police office to verify. Good thing is, they get their cars done where I buy the lights!
~RWJC
COG #9827
"Dress for the crash, not for the ride."
02'VN800-SOLD 59,348mi 02'ZG1000-GONE 05'Nomad-SOLD   05'ZG1000-(12/1)5500mi(1/1)8220mi

Offline Connie Mark

  • Mini Bike
  • **
  • Posts: 119
  • AREA: Southwest Area
  • COG#: forum
  • Membership Level: Expired - Expired Term
Re: Device that flashes the head lights during day light?
« Reply #20 on: January 25, 2012, 05:31:52 pm »
I agree with Bob on every point he has made. I feel naked without the modulator. Any method to be more noticeable should be employed while on a motorcycle (exception is loud pipes, thank you). I've been using them for 3.5 years now and will and do recommend to any safety conscious rider.
2004 ZG1000
2008 KLR650

Offline TrenchFighter

  • Road Bike
  • ***
  • Posts: 400
  • AREA: North Central Area
  • COG#: 9986
  • Membership Level: Expired - Expired Term
Re: Device that flashes the head lights during day light?
« Reply #21 on: January 28, 2012, 11:27:56 pm »
I stole this from another post (Cap'n maybe?!), but maybe its a solution.....modulates the headlights, but only when you press the button. I know its not the same as having it on full time, but it would be better than nothing!

http://www.kickstarter.com/projects/153591688/banshee-horn-safety-system-for-motorcycles-cars-an?ref=live
Feels great to be riding again!!!

Offline RWJC

  • Road Bike
  • ***
  • Posts: 357
  • AREA: South Central Area
  • COG#: 9827
  • Membership Level: Expired - Expired Term
Re: Device that flashes the head lights during day light?
« Reply #22 on: January 29, 2012, 04:24:34 pm »
THAT is..how shall I put it....???







like that.....awesome.
~RWJC
COG #9827
"Dress for the crash, not for the ride."
02'VN800-SOLD 59,348mi 02'ZG1000-GONE 05'Nomad-SOLD   05'ZG1000-(12/1)5500mi(1/1)8220mi

Offline Smiffer

  • Tricycle
  • Posts: 16
  • AREA: North Central Area
  • Membership Level: Expired - Expired Term
Re: Device that flashes the head lights during day light?
« Reply #23 on: January 31, 2012, 10:24:45 pm »
I've has a Kisan modulator on my bikes for the past five years or so and use mine pretty much the way Nosmo does. Having a rider behind you with the modulator on is extremely annoying. Had a BMW behind me last summer for about 20 minutes with his modulator on. Not only was it annoying but it was distracting too. Never had any road rage issue though (other than wanting the BMW to turn off his modulator when right behind me). I think like anything there is a time and a place. On my way to work I would have 1 to 2 people pull out in front of me. With the modulator I rarely have anyone pull out in front of me. Also, always carry the paperwork with you regarding legality. One day I was talking to a cop who pulled into a restaurant behind me. He had no idea that it was legal in MI.
 
Modulators are like a lot of things, there is a time a place to use them and a time and place to turn them OFF.  I have one on each bike, and I have learned a couple of things.  There will be differences of opinion on their use, and here's mine:

I use the modulator when I am the first vehicle in my lane on a non-divided highway, to get the attention of on-coming drivers who might pass traffic in the opposing lane and not see me and pull into my lane.

I use the modulator when I am anywhere on a road with turn-outs, driveways, and places someone is likely to make the proverbial left-turn in front of me.  That's a lot of places.

I use the modulator when in cities or towns in traffic where there is a lot of intersections and left-turning traffic.

I DO NOT use the modulator when cruising behind a car or other motorcycle for a long distance as this just creates a pissed-off driver who eventually will pull off at a the worst possible place, and sometimes come back in behind me and aggressively tailgate due to modulator-induced road rage.  It happens.

I DO NOT use the modulator at 4-way stop intersections or other places that car drivers who don't understand it may interpret it as a signal that I am yielding right-of-way to them.  If you do this, you may find people pulling out in front of you because of the modulator.  The signal for yielding right-of-way is to turn your headlights OFF, then back ON, slowly.  You can't do that on a stock-wired motorcycle.  Car drivers for the most part know nothing about motorcycles and how they work.

99.7734 % of car drivers, and MOST LEO's do NOT know it is a modulator and think it is a headlight flasher (it is most specifically NOT, as FLASHERS are illegal, and in no case can a non-emergency vehicle have "wig-wag" headlights).  I "pulled over" a local cop once when I came up behind him on the freeway, and he thought I was trying to signal him to pull over, so he changed lanes, joggled in behind me, and lit me up.  We went to the shoulder, I explained the situation, he said that "civilians" can't have headlight flashers.  I explained the difference, I showed him the Washington State law and the federal statue (ALWAYS keep this paperwork on your bike with your license and registration info).  He said he had been a LEO for 18 years and had never heard of modulators.  We parted friends and I did not get cited for anything (good, because I had committed no infractions.)

Expect a LOT of people to pull over and yield to you, thinking you are an emergency vehicle, then get really, really pissed when they see you are not.  You may get into some yelling matches.

If you use one, use it judiciously and realize that it may in some limited cases actually cause you more problems than good.