(a) Any person operating a bicycle shall:
(1) Obey the instructions of official traffic control device applicable to vehicles, unless otherwise directed by a police officer;
(2) 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 331.15;
(3) Yield the right of way to pedestrian and vehicular traffic upon the roadway as lawfully required;
(4) Yield the right of way to a pedestrian upon a sidewalk;
(5) Give timely and audible signal before overtaking and passing a pedestrian upon a roadway or sidewalk.
(b) Except as otherwise provided in this subsection, whoever violates this section is guilty of a minor misdemeanor. If, within one year of the offense, the offender previously has been convicted of or pleaded guilty to one predicate motor vehicle or traffic offense, whoever violates this section is guilty of a misdemeanor of the fourth degree. If, within one year of the offense, the offender previously has been convicted of two or more predicate motor vehicle or traffic offenses, whoever violates this section is guilty of a misdemeanor of the third degree.