The pavement is the part of the road that carries the traffic (not to be confused with the footpath), and has a set of layers or material placed over the natural ground (subgrade). The pavement layers spread the load of the vehicles so that it does not exceed the strength capacity of the subgrade.

Pavement, conversely, is a type of concrete that contains aggregates, cement, and water. Depending on the location and usage of the used pavement material, a mixture of different chemical admixtures may be added to make it more durable.

Hiers Construction, paving is the process of finishing roads with asphalt. Before paving can begin, properly installing the subgrade is essential. Subgrade is the earth (or soil, or dirt) that the paving will cover. Performing a proof roll ensures a surface is ready for paving.

Decision Making Tool Typically when a PMS is implemented, it can be an invaluable tool in deciding where and when pavement construction, maintenance, and rehabilitation efforts should occur. When well done, a PMS helps to remove individual subjectivity from the process and to produce unbiased decisions.