[just another ref]

is a great learning tool for officiating in general and traveling in particular. I have used it many times to check what I thought was a violation. For me personally, a travel has always been one of two calls that I make where the whistle seems to go off by itself and I am making a signal sometimes before I really know what happened. (player control foul is the other call) I was taught, and I believe, that "If it mighta been a travel, it ain't a travel."
(local dialect) Translated, that means there is nothing much worse than a
"phantom violation" call. With this in mind, I frequently say to myself during a game, "That mighta been a travel," without making a call . BUT, when I see one that trips the trigger, so to speak, it's almost out of my hands. Now, in spite of what some of my clever in-laws say, I do not wear a whistle to watch games on tv, but the trigger still gets tripped. I can honestly say that I have never seen a travel, many uncalled, that tripped the trigger and had DVR prove me wrong. Perhaps the worst is the catch by the big guy on the block. He pivots, takes a giant stride into the paint, plants his non-pivot
foot and follows with the pivot. (sometimes a step, sometimes a drag) He squares up, puts up a short shot, and no call.