Rainforest
Senior Member
Yeah, I guess both are useful. An individual rider gets more from the headways statement, especially when the headways are not uniform. "Every 4-6 min" is not the same as "every 3-10 min" for the expected wait, even though both might correspond to the same average frequency.
On the other hand, a city planner is likely more interested in the number of trains per hour, to calculate the overall capacity.
On the other hand, a city planner is likely more interested in the number of trains per hour, to calculate the overall capacity.