A road roller is a machine used to compact and flatten a road. It is usually mounted on the front of an excavator or tow vehicle, and can be fitted with different types of hammers that are used to compact the road surface. There are four main parts in a typical road roller: 1. The frame, which supports the rest of the machine’s components. 2. The hammers, which are typically fitted on either side of the frame and used to flatten the ground by pounding it with repeated blows from above. 3. The body, which contains all other components like engine and transmission to power the machine and make it move 4. The wheels or tracks that provide mobility for the machine