The term 'long-distance transports' can be summarized by the crossword solution 'SEMIS', which is an abbreviation for semi-trailer trucks. Semi-trailer trucks are large, heavy-duty vehicles used to transport goods over long distances. They are composed of a tractor unit and one or more trailers, and are capable of carrying large loads. Semi-trailer trucks are commonly used in the transportation industry, as they are able to cover large distances quickly and efficiently.