Originally Posted by
chaadster
“May” is neither must nor an obviation of the fact that all motor vehicles have only one shared set of hand signals. That bicycles *may* use a different hand signal for right turns in some states does not mean doing so is better, but it does make bicycles the exception. If you think unique signaling is more clear on the road, go ahead and be that guy. I still think it’s smarter to use and reinforce uniform practice which all vehicle operators should have been trained on,
"Trained on" for some folks >40 years ago, and which no car or motorcycle uses anymore.
Funny thing is, this whole thread started because the OP had NEVER SEEN ANYONE SIGNAL THAT WAY, and had no clue what it meant, which kind of undermines the whole universality argument right out of the box.