^My Specialized Flux Expert has a "visual horn" (brief strobe of the light) if you press & release the handlebar-mounted remote button very quickly (easier said than done.) It does come in handy at times along with the ability to quickly cycle the 1200 lumen high beam on-then-off to 'flash' oncoming traffic. I prefer the strobe for left-cross avoidance since flashing the high beam could be misconstrued to mean "go ahead, I'll wait for you to turn left in front of me." I only install the Flux Expert about 1/2 the year since it's really overkill during daylight savings time when I'm off the road by sunset. A construction worker once thought I was a motorcycle at night as I approached with the Flux Expert on the 800 lumen setting with a nice beam cutoff.