flashing for rbt is no different to speed traps. think about it. if they can see it, why flash? and if they cant, its usually too late for them to turn around anyway. if they do its probably gonna be noted by the cops at the rbt.
if they cant see it, a warning might stop some idiot doing 15k over while playing with his stereo from ploughing into the back of the line.
also the not flashing euros is tall poppy syndrome pure n simple. youse all jelly brah(s). in the end, flashing is supposed to be a warning of road hazard, be it cops, radar, or a fallen tree