We have all seen those huge items of rubber from semi truck tires on the motorway.

They are referred to as alligators. Road kill is an usual site on lots of roads, and common carrier refer to it as road pizza. Flat bed trailers are usually described as skateboards. Tractor trailers are frequently described as a box. If you see a vehicle relocating without a trailer affixed to it, truckers call this bobtailing. While it saves them of fuel mileage, it is a rugged roadway without that trailer on the back to assist smooth points out.