class i railway造句

Great Western Railway continues to serve many producer loading sites along their entire rail network, but also provide railcar storage for Class I railways and railcar companies.
In February 2015, the federal Minister of Transport announced a two-year phase-in of stricter liability for rail carriers, in which a Class I railway handling hazardous material could be required to carry a billion dollars in liability insurance.
It's difficult to find class i railway in a sentence. 用class i railway造句挺难的