Opdateringerne er baseret på oplysningerne fra den ansvarlige infrastrukturforvalter, der i meddelelsen om prognose for togkørsel for det tog, som forsendelsen/vognen sendes med, sender togets forventede ankomsttidspunkt (TETA) for definerede rapporteringspunkter.
The updates are based on the information from the Infrastructure manager in charge, which sends, within the train running forecast message for the train on which the shipment/wagon is transported, the train estimated time of arrival (TETA) for defined reporting points.