I ran into the problem, that in the US there are very different speed limits depending on each state. So using default values from osm2po.config does not really help (or am I wrong?). For some areas I'd like to adjust those values "manually". To do so I'd need to know which edge took its value from osm2po.config and which took its value from OSM.
Is there a reccomended way to indicate which edge has been attributed by a value from osm2po.config and which has been attributed from values derived from OSM?