What does the term "PC" stand for in roadway design?

In roadway design, the term "PC" refers to the "Point of Curvature." This is a critical concept in the context of horizontal and vertical alignment of roads. The Point of Curvature is the point at which a straight segment of the road begins to curve. Understanding this term is essential for engineers and planners, as it helps in defining the geometry of the road and its subsequent transition into a curve.

The design of curves is vital for ensuring safe navigation by vehicles. At the Point of Curvature, various design factors, such as the radius of the curve and the superelevation (the banking of the road at a curve), need to be taken into account to facilitate smooth traffic flow and enhance safety.

Other terms like "Point of Control," "Primary Curve," and "Pathway Connection" do not specifically relate to recognized terms within roadway design or do not capture the same functionality regarding road alignment. This specificity emphasizes the importance of "PC" as a standard term in roadway geometry, further reinforcing the understanding of how roads are designed for efficient and safe travel.