HOOK OF HOLLAND, Netherlands (AP) — Traffic moves quickly and smoothly at the Hook of Holland ferry terminal on the western edge of Europe’s biggest port.

A queue of trucks parked by a giant white ferry rumbles forward and one-by-one the drivers make a sharp turn onto a ramp that takes them into the belly of the ship bound for the English port of Harwich. Each truck takes just minutes to get on board.

In the Netherlands, a major exporter to Britain and gateway to and from Europe through its ports, there are fears that freight will have a much longer wait come March 30, the day after Britain leaves the European Union.