Once you have logged in correctly, select the active entity to which you want to attach the trailer to the vehicle.
Select the “Vehicles” tab in the main menu on the right.
Select the vehicle in question. To couple a trailer, the weight class should be 14 or 42.
A message for selection will appear in the displayed window: "I am conducting a trip with a trailer/semi-trailer".
You can also connect your trailer via the e-TOLL PL mobile application.