I would watch out for cyclists as well, some skaters have a death wish, I have this special equipment fitted on my bike, just in case they stray into my path. It is an air horn and I can tell you it works really well, even on joggers with their ipods on full blast. Having said that I am a cyclist in the cycle lane, I do not mind joggers, skater, horse, riders as long as they are aware. I draw the line at scooters and motorcyclists which after being knocked off twice, I have to say I am at war with those b*****