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

They are referred to as alligators. Road kill is a common site on several roadways, and truck drivers refer to it as road pizza. Apartment bed trailers are typically referred to as skateboards. Tractor trailers are generally described as a box. If you see a vehicle moving without a trailer attached to it, truckers call this bobtailing. While it saves them of gas mileage, it is a rugged road without that trailer on the back to assist smooth points out.