Raj Path Infracon Junior Engineer Civil Interview Questions and Answers

There are three types of roads: National Highways, State Highways, and Village Roads.

• National Highways are maintained by the central government and connect major cities and towns.

• State Highways are maintained by the state government and connect district headquarters and important cities.

• Village Roads are maintained by the local government and connect villages to nearby towns and cities.

• Other types of roads include expr...read more

The layers of a road include subgrade, subbase, base, and surface course.

• Subgrade: natural soil or improved soil beneath the pavement

• Subbase: layer of aggregate material placed on top of the subgrade

• Base: layer of asphalt or concrete placed on top of the subbase

• Surface course: top layer of asphalt or concrete that provides a smooth riding surface

• Cross section shows the layers in a vertical view