Section 1139 - Riding on roadways and bicycle paths(a) A person operating a bicycle upon a roadway shall exercise due care when passing a standing vehicle or one proceeding in the same direction. Bicyclists generally shall ride as near to the right side of the improved area of the highway right-of-way as is safe, except that a bicyclist: (1) Shall ride to the left or in a left lane when:(A) preparing for a left turn at an intersection or into a private roadway or driveway;(B) approaching an intersection with a right-turn lane if not turning right at the intersection; or(C) overtaking another vulnerable user.(2) May ride to the left or in a left lane when taking reasonably necessary precautions to avoid hazards or road conditions. Examples include objects on the road, parked or moving vehicles, pedestrians, animals, surface conditions that may impair the bicyclist's stability, or safety hazards caused by a narrow road or steep embankment, road geometry, or unfavorable atmospheric conditions.(b) Persons riding bicycles upon a roadway may not ride more than two abreast except on paths or parts of roadways set aside for the exclusive use of bicycles or except as otherwise permitted by the Commissioner of Public Safety in connection with a public sporting event in which case the Commissioner shall be authorized to adopt such rules as the public good requires. Persons riding two abreast shall not impede the normal and reasonable movement of traffic and, on a laned roadway, shall ride within a single lane.(d) Bicycles may be operated on the shoulders of partially controlled access highways, which are those highways where access is controlled by public authority but where there are some connections with selected public highways, some crossings at grade, and some private driveway connections. The Traffic Committee may determine that any portion of these highways is unsafe and therefore closed to bicycle operation.Added 1971, No. 258 (Adj. Sess.), § 3, eff. 3/1/1973; amended 1989, No. 178 (Adj. Sess.), § 1, eff. 5/12/1990; 1991, No. 175 (Adj. Sess.), § 22, eff. 4/1/1993; 1993, No. 8 , § 1; 1999, No. 18, § 41u, eff. 5/13/1999; 2003, No. 160 (Adj. Sess.), § 38, eff. 6/9/2004; 2009 , No. 114 (Adj. Sess.) , § 6; 2015, No. 158 (Adj. Sess.), § 44.