What is the difference between Heavy duty road and medium duty road?

Heavy-duty roads are designed to support higher traffic loads and more substantial vehicles, often featuring thicker pavement and stronger materials to withstand the stress from heavy trucks and equipment. In contrast, medium-duty roads are built for lighter traffic, suitable for passenger vehicles and lighter commercial vehicles, and typically have thinner pavement layers. The design specifications, maintenance requirements, and cost considerations differ significantly between the two, with heavy-duty roads usually being more expensive to construct and maintain.