Ala. Code § 32-5A-263: Riding on Roadways and Bicycle Paths; Right Side Signalling.

(a) Every person operating a bicycle upon a roadway shall ride as near to the right side of the roadway as practicable, exercising due care when passing a standing vehicle or one proceeding in the same direction.

(b) Persons riding bicycles upon a roadway shall not ride more than two abreast except on paths or parts of roadways set aside for the exclusive use of bicycles.

(c) Wherever a usable path for bicycles has been provided adjacent to a roadway, bicycle riders shall use such path and shall not use the roadway.

(d) A person riding a bicycle may give a hand signal for a right turn by extending his or her right arm and hand horizontally on the right side of the bicycle. A child under the age of sixteen shall not be required to comply with the right side signalling.