Excuse me, what does the warning gesture command mean? What's the difference between them? Does one hand refer specifically to the right side? Cars. Driving license. Traffic Laws

1, first determine whether one hand is moving or both hands are moving;

2, if it is two hands: look at the face, face to the left (left turn), face to the right (right turn), hand straight (straight signal);

3. If it is a hand: the front of the car is lifted horizontally (stop signal), the front of the car is straight (lane change signal), left (turn left), and right (deceleration) (one-handed shorthand: turn left and wait for a turn, turn right and decelerate, and the front of the car changes lanes);