**3. Model Input Parameters and Variables**

The TCO model has many input variables which we use to describe the route and the timetable. Several of these are, later in this paper, varied to analyse how they influence the TCO. The parameters are factors which we do not vary in this analysis, but they are still needed to determine the TCO. The parameters describe important values which influence the cost of buses, batteries, chargers, drivers, and the electricity grid.
