In 2009, an average of 59,600 cars used the tunnel every day.

The problem: one must leave the system to use the tunnel.

Only 23 percent said they expect to use the tunnel.

The first train to use the tunnel was on March 20, 1904.

Fortunately, they were far from the only people to use the tunnel.

Only routes 3, 4 and 33 use the full tunnel.

"Who uses the tunnel, and what would happen if I caught them?"

Since 17 June 2008 trains running to the south have used the new tunnel.

Slaves used the tunnel to carry food in and out of the house.

Six months after it was opened, 3,655,000 passengers used the tunnel.