Rogoff has had an instrumental role in advising policy makers on the operating and capital needs of Amtrak, including the initiation and financing of high speed Acela service, as well as the financing of dozens of new light rail and bus rapid transit systems across the United States.

WHITEHOUSE: THE WHITE HOUSE

The government plans to tackle congestion in cities by a big expansion in light rail, trams and other rapid-transit systems.

ECONOMIST: British election briefing: Transport