sentences:  However, the original connection Bydgoszcz – Kościerzyna – Gdynia was abandoned by freight trains which go on the route Bydgoszcz – Tczew – Gdansk – Gdynia, and today is used only by local traffic.Today, the Coal Trunk-Line is one of the most prosperous rail routes in Poland.Passenger trains are few (many passenger trains on Tczew - Inowrocław part of this line), but freight trains are very numerous, as this is the fastest way from the industrial areas of Upper Silesia, Zagłębie Dąbrowskie and Częstochowa to the Baltic ports.