Job Description:

• 1) Drives heavy rolling machine to compact earth fills, subgrades, flexible base, and bituminous surface to grade specifications preparatory to construction of highways, streets, and runways: Moves levers, depresses pedals, turns handwheels, and pushes throttle to control and guide machine.

• 2) Drives machine in successive overlapping passes over surface to be compacted.

• 3) Determines speed and direction of machine, based on knowledge of compressibility of material under changing temperatures, so that ridges are not formed by excessive pressure.