373.06   HAND AND ARM SIGNALS; YIELD RIGHT OF WAY.
   Any person operating a bicycle shall:
   (a)   Before changing course, turning or stopping upon a roadway, exercise due care that the movement can be made with reasonable safety and give the hand and arm signals required by Section 331.14;
   (b)   Yield the right of way to pedestrian and vehicular traffic upon the roadway as lawfully required;
   (c)   Yield the right of way to a pedestrian upon a sidewalk;
   (d)   Give timely and audible signal before overtaking and passing a pedestrian upon a roadway or sidewalk.
   Penalty - see Sections 307.01 and 307.02