When I took a bus in Greece, 4 people were needed for a bus: 1 in a ticket shop, 1 selling tickets on the bus, 1 validating tickets, and 1 driver. None were in

When I took a bus in Greece, 4 people were needed for a bus: 1 in a ticket shop, 1 selling tickets on the bus, 1 validating tickets, and 1 driver. None were in any kind of hurry. In Belgium, there is only the driver and maybe on the busiest locations a ticket shop.