(a) A person operating a bicycle shall ride upon the sidewalk rather than the roadway when sidewalks are available, except that no person shall ride a bicycle upon a sidewalk where signs have been erected by authority of Council or other duly designated local authority prohibiting such bicycle riding, or within a business district. At no time shall a person under the age of eleven years operate a bicycle on a street.
(b) Whenever a designated usable path for bicycles has been provided adjacent to a street, bicycle riders shall use such path and shall not use the street.
(c) Whenever a person is riding a bicycle upon a sidewalk or street, such person shall yield the right of way to any pedestrian and shall given an audible signal before attempting to overtake and pass a pedestrian or another bicycle. This audible signal shall be given only by bell or other warning device capable of giving an audible signal and shall be given at such a distance and in such a manner as not to startle the person being overtaken and passed.
(d) No person shall ride a bicycle across or through any intersection involving a through street. Such intersections are to be crossed by walking the bicycle across or through the intersection.
(e) Whenever a person is riding a bicycle upon a sidewalk, the person, before overtaking and passing a blind person carrying a white or metallic cane, shall dismount and overtake or pass on foot.
(f) When a bicycle is operated on the street, the operator shall give hand signals before turning, changing lanes or stopping. Such signals shall conform with Section 331.15
.
(g) Every bicycle rider shall exercise due care to avoid colliding with any pedestrian or any vehicle upon any roadway, sidewalk or bicycle path, or endangering the life, limb or property of any person while in the lawful use of the streets, sidewalks or any other private or public property.
(h) No person shall operate a bicycle at a speed greater than is reasonable and proper under the conditions then existing.
(i) The operator of a bicycle emerging from or turning into an alley, driveway or building shall, upon approaching a sidewalk or the sidewalk area extending across any alley, driveway or building, yield the right of way to all pedestrians approaching on such sidewalk area. Upon entering the street, such operator shall yield the right of way to all vehicles approaching on such street.
(j) No person shall engage in trick riding or operate a bicycle without both hands upon the handle grips except when necessary to give the hand signals required herein or as provided in Section 373.02
(d).
(k) No person shall operate a bicycle without exercising reasonable and ordinary control over such bicycle.
(l) No person shall operate a bicycle in a weaving or zigzag course unless such irregular course is necessary for safe operation or in compliance with law.