What is the impact of heavy truck traffic on asphalt pavements?

Heavy truck traffic significantly affects asphalt pavements primarily by exerting greater stress and deformation on the surface. The weight and frequency of these vehicles lead to higher loads being applied to the pavement, which can result in structural damage over time. This includes issues like ruts, cracks, and fatigue, as the pavement material is unable to handle the excessive forces generated by heavy trucks.

Unlike lighter traffic, which has a lighter overall impact, substantial truck traffic creates a scenario where the pavement must accommodate not just the weight but also the dynamic forces during acceleration, braking, and turning. Consequently, these stresses can lead to accelerated deterioration and the need for repair or rehabilitation of the asphalt. Understanding this impact helps in the design and maintenance planning of pavement structures to ensure longevity and performance under such loading conditions.