It brings a completely different way of using the transport, in fact. When the period between 2 trains/buses/whatever is below 5 minutes, you don't check the t

It brings a completely different way of using the transport, in fact. When the period between 2 trains/buses/whatever is below 5 minutes, you don't check the timetables, you don't plan anything, you don't calculate anything, you just walk to the stop without thinking. When the period is 10 minutes or more, you handle it more like an intercity train, you check, you plan, you calculate. Or you don't and you wait, and wait, and wait. Personally, I don't have a problem with it, but it is a bit of an obsession of mine to plan and calculate everything... also I've lived most of my life in places where you'd be happy with a train, or a bus, every 2 hours (supposing there was a line). For people who have been accustomed to the comfort of mind of the first option, it is felt harder to switch to the second option. ------- But then there is the problem of transfers. There, low frequency strikes badly and there is nothing you can do about it, contrary to the first wait at the first stop. Personally, I had no problem with 15 minutes period buses, but the transfers were killing me, and it was getting much worse during low-activity times. Just a small-looking increase in the period has exponentially bad consequences. Less terrible, there is also the case when you have to arrive at a fixed time. Unless the arrival time matches, a low frequency forces you to start earlier. So, the time is wasted even if you calculated your first wait.