If you mean the big round ones? No, those are traffic lights for stop signals.
They came from All Electronics in California:
https://www.allelectronics.com/item/rtl-2/red-led-traffic-stop-light-120-vac-used/1.html
and are a foot across, so about the same size as many car and truck taillights.
I don't actually have them mounted on the trike; they're going to go on the detachable light bar for the various trailers I use. First I have to do something to work around the 115VAC power supply requirement. I have a number of ideas on that, but it's not something most people will want to deal with, so these aren't for everyone (even if they have the desire for lights this large :lol: ).
The trike is using two originally-incandescent taillgihts off Hondas (one scooter, one motorcycle, but by coincidence identical). I took the sockets out and lined the interior with 12V LED strips' it's brighter, more evenly illuminated, and takes less power. These are both tail and brake. They're each about the same rear surface area as my hand. They also are a couple of inches "deep" with all of that surface area illuminated as well, so they can be seen from any angle from any position that's behind or beside (or even above) them.
They also have a completely clear lens on the bottom, to let the lights inside illuminate a license plate on the vehicles they came from. For me, that lights up the road behind and beside the trike (though not nearly as much as the light on the rack in ffront of the taillgithing bar, whcih lights teh entire cargo area and deck and surrounding road, making the entire trike look much larger as it goes down the road (and thus more "worth looking at" to the brain).
Then between them there's a "third brakeligth" from a car or truck (like in or above the rear window); it is incandescent as I didn't have enough LED strips to fill it at teh time (I probably do now).
FWIW, long strips of lights can have as much surface area, but it's not in the shape most people are "trained" to look for so they don't immediately judge things based on it--the closest thing they usually see is roadside advertising / store signs, which are stationary and not on the road so their brain may choose to completely ignore it until it becomes obvious it's actually on the road and brings it to conscious attention to deal with it.
So you can do as several people here on ES ahve done, and add long waterproof LED strips to the seatstays and fork (and downtube, etc).
I have white strips on the "downtube" of the trike and CrazyBIke2, and though these are visible from teh front, they are really there to light up the road around me so I look bigger. (it works--at night, drivers pass farther away from me when it's turned on, and both follow and pass closer when it's off.
