As a Diesel Power reader, it's likely you have a big truck with big tires, a big suspension lift, and a big, bombed-out diesel engine. But when it comes time to honk at someone, you're stuck with that ...

If you've ever heard a train blowing its horn and thought, "Man, I wish I had that for my truck," you're not alone. This wonderful invention made its way from trains onto heavy trucks sometime around ...