Hold the arm straight out.
Yes.
stick your left arm out of the window
left arm up as if you were being sworn in.
To indicate stopping or coming to a halt while driving, use the hand signal of extending your left arm out of the window and pointing downward. To signal a left turn, extend your left arm straight out to the side. To signal a right turn, extend your left arm out of the window and point upward.
straight left arm out of the driver seat
To effectively use a bicycle turn signal while riding on the road, extend your left arm straight out to the left to indicate a left turn, or extend your left arm out and bend it upwards at the elbow to indicate a right turn. Make sure to signal in advance of making the turn to give other road users time to react.
Well, if you have turn indicators it'd be better if you used them. But if that's all you've got it's usually OK.Added: YES, that is the correct hand signal.
To properly use the turn signal on your bicycle, extend your left arm straight out to indicate a left turn, and extend your right arm straight out to indicate a right turn. Remember to make these signals clearly and in advance of your turn to alert other road users.
Hand signal: put your arm straight out of your left hand window and fix the light before a cop sees it
To properly use bike turn signals with your hand while riding, extend your left arm straight out to signal a left turn, and extend your right arm straight out to signal a right turn. Remember to always signal before making a turn to alert other road users of your intentions.
If your turn signals break, you can use hand signals to indicate your intentions while driving. To signal a left turn, extend your left arm straight out the window. To signal a right turn, extend your left arm out the window and bend it upward at a 90-degree angle.
To effectively signal your turns while riding a bicycle, use hand signals and turn signals. Extend your left arm straight out to signal a left turn, and your right arm straight out to signal a right turn. You can also use a bicycle-mounted turn signal device for added visibility. Remember to always check for traffic before making your turn.