1. A method for operating one or more road milling machines, encompassing at least the following steps: specifying at least two road milling tasks comprising roads and/or road segments to be processed by milling; ascertaining at least one expected milling output of the road milling machine for the roads and/or road segments to be processed, based on at least one of material properties or characteristic values correlating with the material properties, wherein the material properties and/or characteristic values are associated with at least one of road designations, designations of road segments, or geographic coordinates as respectively pertinent to the roads and/or road segments to be processed; ascertaining and displaying a sequence, optimized at least with regard to milling output, of the road milling tasks that are to be carried out.