(a) Except as otherwise provided by local ordinance, every vehicle stopped or parked upon a two-way roadway shall be stopped or parked with the right-hand wheels parallel to and within 12 inches of the right-hand curb or if there is no curb, within 12 inches of the edge of the roadway.
(b) Except when otherwise provided by local ordinance, every vehicle stopped or parked upon a one-way roadway shall be so stopped or parked parallel to and within 12 inches of a curb or, if there is no curb, within 12 inches of the edge of the roadway, in the direction of authorized traffic movement.