Steamrollers flatten roads using absurd mass and vibration

Making perfectly flat roads requires a piece of equipment that simply bullies the dirt into submission. Modern compactors rely on a colossal, incredibly dense steel drum filled with rotating eccentric weights. This unbalanced spinning forcefully slams the heavy drum violently up and down thousands of times a minute, aggressively beating the fresh asphalt and underlying soil into a perfectly dense, unyielding slab.