75 Pa.C.S. § 3544 – Pedestrians walking along or on highway

(a) Mandatory use of available sidewalk.— Where a sidewalk is provided and its use is practicable, it is unlawful for any pedestrian to walk along and upon an adjacent roadway.
(b) Absence of sidewalk.— Where a sidewalk is not available, any pedestrian walking along and upon a highway shall walk only on a shoulder as far as practicable from the edge of the roadway.
(c) Absence of sidewalk and shoulder.— Where neither a sidewalk nor a shoulder is available, any pedestrian walking along and upon a highway shall walk as near as practicable to an outside edge of the roadway and, if on a two-way roadway, shall walk only on the left side of the roadway.
(d) Right-of-way to vehicles.— Except as otherwise provided in this subchapter, any pedestrian upon a roadway shall yield the right-of-way to all vehicles upon the roadway.