SDCL § 32-20B-5: Operation on roadway--Riding close to right-hand curb required--Violation as misdemeanor.

Any person operating a bicycle upon a roadway at less than the normal speed of traffic at the time and place and under the conditions then existing shall ride as close as practicable to the right-hand curb or edge of the roadway. However, a person operating a bicycle may move from the right-hand curb or edge of the roadway to overtake and pass another bicycle or vehicle proceeding in the same direction, to prepare for a left turn at an intersection or into a private road or roadway or to avoid conditions including, but not limited to, fixed or moving objects, parked or moving vehicles, bicycles, pedestrians, animals, surface hazards, or substandard width lanes that make it unsafe to continue along the right-hand curb or edge. For purposes of this section, a "substandard width lane" is a lane that is too narrow for a bicycle and vehicle to travel safely side by side within the lane. A violation of this section is a Class 2 misdemeanor.