In the last year, I've been through over a dozen cities and used public transport in all of them. It is wild just how confusing and complex buying a ticket can be. While some cities obviously take a user-centred approach to ticketing, others appear to take a Kafkaesque delight in a bureaucratic maze of zones, apps, and intricate restrictions. One of the seminal texts in computer systems design…
I honestly don’t know. It might have something to do with connections, because you have to scan on each bus or LRT you take, but I rarely ever do that, and on the occasions I did, there were no double charges as far as I remember.
Maybe they just want you to do it so they can track journeys better?
I should probably look this up…