21202.
(a) A person operating a bicycle upon a roadway at a speed less than the normal speed of traffic moving in the same direction at that time shall ride as close as is safe or practicable to the right-hand curb or edge of the roadway.(b) Subdivision (a) does not apply in any of the following situations:
(1) When overtaking and passing another bicycle or vehicle proceeding in the same direction.
(2) When preparing for a left turn at an intersection or into
a private road or driveway.
(3) When reasonably necessary to avoid conditions, including, but not limited to, fixed or moving objects, vehicles, bicycles, pedestrians, animals, surface hazards, or substandard width lanes, that make it unsafe to continue along the right-hand curb or edge, subject to Section 21656. For purposes of this section, a “substandard width lane” is a lane that is too narrow for a bicycle and a vehicle to travel safely side by side within the lane.
(4) When approaching a place where a right turn is authorized.
(5) When riding within a class I, class II, or class IV bikeway.
(6) When riding within a class III bikeway within the path of a
shared lane marking.
(7) When riding beside another bicycle in any situation described in paragraphs 1 to 6, inclusive, or whenever riding outside the path of vehicular travel in a lane. inclusive.
(c) A person operating a bicycle upon a roadway of a highway that carries traffic in one direction only and has two or more marked traffic lanes may ride as close to the left-hand curb or edge of that roadway as is safe or practicable.