I do not understand the part “Its possible to have trains make profit with a 30 min route”. How is that compatible with the 20 minutes rule ? I mean 30 minutes (with 1 train) = 15 minutes travelling time + an average of 15 minute waiting time… That is already 30 minutes not considering the deplacements in the two cities to/from stations. Even with two trains it is still 15 minutes travelling + an average of 7.5 waiting…
Do I interpret the 20 minute rule wrongly ?
Can someone tell me how to calculate itsdifferent components ?