We all know the had signals for left and right turns and stopping on a bike, but lately I've had a couple of experiences where I've felt the need to communicate to motorists that I intend to proceed straight ahead, such as when approaching a four-way intersection with a green light, where the oncoming car may cut you off if they try to make a left. Whether or not the motorist is signalling a turn seems to be an un-reliable indicator around here.
When I am approaching an intersection that I intend to go straight through, and I feel I need to communicate this to other people, I've adopted a signal that pretty much consists of a 'tomahawk chop' with my left hand, fingers pointing in the direction that I intend to go, and repeated for 4 or 5 'chops'.
Does anybody else use a signal to communicate their intention to go straight ahead?
Is there an official / traditional signal for this?