What is the main objective of traffic load analysis in asphalt pavement design?

The main objective of traffic load analysis in asphalt pavement design is to determine the structural requirements of the pavement. This process involves evaluating the volume and types of traffic expected on the pavement, which significantly influences the material selection, thickness, and overall design of the pavement structure. By understanding the expected load stresses from vehicles, engineers can design asphalt pavements that can adequately support these loads over time, thus ensuring durability and performance while minimizing maintenance needs and costs.

The other options, while important in their own contexts, do not directly relate to the primary goal of traffic load analysis. Assessing environmental impact is crucial for overall project sustainability but does not focus on structural requirements. Estimating surface color and improving aesthetics are more about the visual and design aspects rather than the engineering and structural integrity essential for pavement longevity and safety.