The vaults were then changed at night or when the bus had finished service and then were counted by a different means, they were counted by machine coin counters and er so, instead of say erm what, sixty or seventy conductors paying in their money, this was all erm on the bus, so there may have been five or six drivers had worked that bus that day and all the takings he'd taken during the time was all in this night safe in this vault.