They do, as far as I know, however in the California Vehicle Code section 22111 it says the following:Originally Posted by fatbottomedgurl
So, in the state of California it is perfectly legal to use your right hand to point or use the classic left handed right turn hand signal. I personally use the "point in the direction of travel" method (i.e. use right hand pointing right) since it leaves less ambiguity. With some drivers who haven't seen a hand signal in a loooooooooong time they may forget what the crooked left arm pointing up means.22111. Hand Signals[...]
(b) Right turn-hand and arm extended upward beyond the side of the vehicle, except that a bicyclist may extend the right hand and arm horizontally to the right side of the bicycle.[...]
Mel