Maintenance costs are well understood.
But maintenance closures can cause an even greater number of headaches.
There’s a North London tube station, Kentish Town, that is currently closed for at least a year for maintenance and upgrade work.
There are tens of thousands of people in that suburb that have had to alter the way they commute for what will amount to more than 300 days.
Yet on Transport for London’s budget, I’m sure the inconvenience isn’t listed as a cost. Just because the cost is hidden, it doesn’t mean it’s not there.