The adult touches in at the wider entry gates then touches out at the wider exit gates and walks through with the child both times. On the buses you only touch in when you board at the card reader by the driver, you don't touch out when you get off. You do...
So it looks as if overall only 35% of usual travel is taking place, so at a guess around 40% of the workforce is working at home (though this ignores leisure travel/school children etc). With road capacity at 100% (of 56%) and public transport capacity at 12% (of 44%) the total...