We have all seen those big items of rubber from semi vehicle tires on the highway.

They are described as alligators. Roadway kill is a common website on numerous roads, and common carrier describe it as roadway pizza. Flat bed trailers are often referred to as skateboards. Tractor trailers are commonly referred to as a box. If you see a vehicle moving without a trailer connected to it, truckers call this bobtailing. While it saves them of energy mileage, it is a bumpy roadway without that trailer on the back to aid smooth points out.