What is the term for the highest point of the road designed for efficient drainage?

The term for the highest point of the road that is specifically designed for efficient drainage is referred to as the crown. This crown shape allows water to flow away from the center of the roadway towards the sides, preventing water accumulation and potential hazards, such as hydroplaning or erosion. The design is critical in maintaining road safety and structural integrity, as proper drainage ensures that the surface remains stable and reduces maintenance costs over time.

In road design, the concept of the crown is integral for facilitating effective drainage, thereby enhancing vehicle safety and extending the lifespan of the road surface. Other terms, while they might imply height, do not specifically relate to the function of directing water flow as the crown does. For instance, terms like peak, summit, and vertex are more general in nature, relating to the highest point in various contexts but lacking the specific application to road drainage design.