The kingpin locking mechanism on a semi-truck trailer is what allows thousands of big trucks to make shipments all across the U.S. Here's how it works.

ZF reveals battery-powered semi trailer concept at IAA Transportation in Germany, previewing a way to reduce ICE truck emissions. The trailer features an electric motor along with regenerative ...

The extra power also helps trucks accelerate faster—something that can help with safety when a truck is trying to merge onto a highway—and the new trailer’s regenerative braking means that ...