Originally Posted by
Rick
Cars have turn signals and on a bicycle someone following you can see the extended arm easier than that funky left arm do all thing. The only reason to continue the left arm do all thing would be you are in fear of the little men in the white coats.
I agree that the left-arm-does-all-thing is a bit funky; when I started back running with a stroller in neighbourhoods I realized I should use arm signals and going into right turns I was having mental fits trying to remember whether I was telling the person I was turning right or telling them I was stopping.
Having said all that, it's probably for naught because the drivers probably don't even notice arm flapping much less the intricacies of what the left arm signal means beyond turning left.