Road Construction Cross-Section Diagram - Layered Infrastructure Design #2115404 (License: Personal Use)

This diagram illustrates a standard dual-lane road’s vertical composition, including the top asphalt wearing course, structural base layer, granular subbase, and compacted subgrade. Red-and-white striped safety barriers line the edges, while drainage channels and edge supports ensure long-term durability and vehicle safety. The symmetrical layout emphasizes balanced load distribution and erosion control.

Used on civil engineering educational sites, transportation authority documentation, or infrastructure project proposals to explain road design principles; targets professionals, students, and planners seeking technical clarity on pavement structure.