 Its eastern terminus is PA 662 in the community of Pricetown in Ruscombmanor Township.In the Reading area, PA 12 is a four-lane freeway called the Warren Street Bypass that heads northeast through urban areas, coming to interchanges with several roads including PA 183, PA 61, and US 222 Bus.In Alsace Township, the route becomes a two-lane undivided surface road called Pricetown Road and continues northeast through rural areas, intersecting PA 73 before ending at PA 662.