Ballast tractor

A ballast tractor is like the grown-up version of a toy car that you can put weights in to make it heavier. It's a big machine that's used to move other heavy machines, like airplanes or construction equipment, from one place to another. But because the things it's moving are so big and heavy, it needs to have some extra weight itself to help balance things out and prevent it from tipping over. So, the ballast tractor has a bunch of large weights that are added to it to make it heavier and more stable. Think of it like adding extra pillows to your bed to make it more comfortable and sturdy. With these added weights, the ballast tractor can safely and easily move all kinds of heavy things around.