Aside from signalling left and right turns by pointing, what other common arm signals do commuters use. Or is it just a 'make it up as you go along' basis.
I point forwards if I am going straight through a round-about.
I put my hand behind my back and open my hand up (my version of brake lights) if I am re-merging with traffic (ie going around cars so moving back into the stream of traffic), or if the road becomes to narrow for overtaking (again to let the cars behind me know that they need to beware), or if I am just unobviously slowing down (eg a hazard the car might not see, pedestrians etc). I don't signal I am slowing down if it is obvious (eg traffic lights, intersection etc), but I do stay to the side if possible.
Any other signals that work?
I point forwards if I am going straight through a round-about.
I put my hand behind my back and open my hand up (my version of brake lights) if I am re-merging with traffic (ie going around cars so moving back into the stream of traffic), or if the road becomes to narrow for overtaking (again to let the cars behind me know that they need to beware), or if I am just unobviously slowing down (eg a hazard the car might not see, pedestrians etc). I don't signal I am slowing down if it is obvious (eg traffic lights, intersection etc), but I do stay to the side if possible.
Any other signals that work?