Hello dear two-wheeler colleagues! The most well-known communication sign, which even can drivers know, is the typical biker greeting. Two or more bikers meet and stretch out the left hand and/or arm, according to the motto “Hey, Hello buddy”. Besides this greeting sign I know more: 1. the turn signal is still on => left hand and several times in a row a fist ball and open again or instead of the fist a mouth movement imitating with the hand 2. After the overtaking process, take the right leg from the rest and stretch out or stretch out the right hand down 3. Obstacles on the road => in the case of an obstacle on the right side of the road, stretch out the right foot and, in the case of a left obstacle, stretch out the left foot (alternatively point with the left hand on it) 4. show other road users that they should drive slower (Gr and: Radar control, accident site ect.) => left hand stretch out and wave with the flat hand several times up and down 4. let a faster biker (traffic participant) pass => left arm stretch out and wave with the hand from the back to the front But there seems to be a whole series of more hand signs. I attached two pictures which show further variants and at youtube there are some videos (mainly English) on this topic. I would be interested now. How do you have experienced rabbits with the hand signs. Are you familiar with these signs and do you use them or do you have your own creations?