[Aeolun]

Probably partially to do with how many other children do. The entire spectrum from 5-80 years old all take the train in the morning and throughout the day.

There’s attendants at every station, so if they get off at the wrong place they can always find someone to help.

The child (most of them anyhow) will have a transport card with them registered to the parents address/phone number, so even if they lose their mind staff will be able to contact the parents.