Suppose your car is 1,57 m high, but including the roof box it exceeds 2m.
Considering the routes Hoek van Holland - Harwich and the Irish Sea it is no problem to carry a roof box. In this case you can book the normal car fare (up to 2m high). For our Scandinavian routes the total height of the vehicle determines the price. When your car including roof box exceeds two meters you will have to book 'vehicle higher than two meters, shorter than six meters'.