Have you ever wondered why some semi trucks have one set of wheels and others have two sets crammed together? That's because some semis use a single axle while others have tandem axles, but why is it ...

Hybrid trucks? Sure, though they’re somewhat complex and expensive, and interest has waned in the face of cheap fuel. Hybrid trailers? Comin’ up, and they’ll be comparatively simple and quicker to pay ...

You can’t drive a trailer, but the Hyliion hybrid electric tandem can help propel your rig down the road. From the driver’s seat, you feel nudging from the powered trailer behind. Its primary purpose ...

[Stay on top of transportation news: Get TTNews in your inbox.] When it comes to spec’ing, getting the best fuel economy is about building a tractor with all the right pieces. Even with the best basic ...