I have both looked online and asked a local person who also didn’t know the answer to this: what are the yellow tickets available in a stack inside the metro station for? There is a dispenser on the while and sometimes tickets are just left ly8ng about. Putting one through the turnstile lets you in just like a regular ticket. But surely the plan isn’t that everyone be able to ride free?! Someone said maybe child ticket, but child status is obvious, shouldn’t need a ticket to show.