Understandably, you may need to take the van through tolled roads. If you have not arranged a European E-tag prior to the hire, things are pretty simple, take the motorway ticket when you enter the motorway and when it comes to leaving it, get in the right lane and pay at the cashier. The owner may be subscribed to an automated payment system, if this is the case, agree with him on how to settle this amount, whether via the bond or when returning the van.