The Snowdon Railway's general manager, Alan Kendall, said there was a limit to how many people the train could carry.

BBC: Uphill battles to build peak cafe

On the eve of Thanksgiving, several days before the World Trade Center line reopened, Mr. Lejda and a colleague walked through the river tube, he said, hanging up speed limit signs in the tunnels, since the train operators would be without the lighted signals that usually signal when and where to slow down.

WSJ: PATH's Road Back Is Rocky

"The majority of senators believe the time is now to start drawing down U.S. forces, not just to pre-surge levels but beyond them, and to limit the mission of those remaining to fight al Qaeda, train Iraqis and help protect the borders, " he said.

CNN: 2008 politics woven through Iraq hearings

Since one freight train can carry as much as 280 lorries can, railways can help to limit the rise in road congestion.

ECONOMIST: American railways