That’s a good summary. This kind of problem is not easy to solve- it’s not the kind of thing that has a closed form solution. You typically use a discrete even

That’s a good summary. This kind of problem is not easy to solve- it’s not the kind of thing that has a closed form solution. You typically use a discrete event simulator to model the outcome of different strategies. It seems clear to me, though, that the answer is going to be a mix of “maximize number of trains” and “space them out nicely” during rush hour. I bet the optimal strategy trades off those two variables based on some probability distribution of “expected number of available trains” over time, such that if the number of likely available trains is lower you space them out more, and so on.