underground system BrE
subway system AmE

Just try to avoid peak hours on the Underground system.

Your mayor says the underground system might be closed for a day or two.

A long term plan is to make the city's underground system expand to 8 lines.

"I can tell you that it is the largest underground system discovered in at least the last year," he added.

They are a useful underground system, particularly in deep winter snow.

It stood some ten feet behind the mill and was connected by an underground system.

Fires can be particularly dangerous and damaging within an underground system.

There actually are several forms of these underground systems.

But three stations of the underground system are now threatened, though it too is running normally.

Perhaps by now the whole of the Underground system had become one vast catacomb.

The underground system eased traffic congestion on the city streets.

This can cause stress and frustration with the underground system among commuters.

They discovered an underground system known as the subway.

Similar systems were installed around this time on the London Underground system.

Perhaps, after a while, those Americans will come back and give New York also a good underground system.

Beach grasses form a large underground system of roots.

Business activities will be integrated with the housing and connected to the city centre by the underground system.

Several species of fish and plant life live in this underground system of caves.

The extension of the underground system is hoped to alleviate the city's immense traffic problems.

The London Underground system is also noted for its list of closed stations.

This included the construction of an underground system.

Steam poured up through the vents from the underground system in dirty clouds.

In an underground system, there are multiple paths to every house, so they don't have a way of knowing."

Every town should have an underground system.

Water is recycled and pumped back to Moses' Rock through an underground system.

Much of the focus will be on the subway system.

Chicago had a subway system, and I could get around.

He was the first person to be killed on the subway system this year.

And there's a lot that can be done with the subway system.

And the story of the new subway system is wonderful.

About seven million people a day ride the subway system.

The subway system has hit a century of home runs.

There was no subway system; the first line opened in 1904.

"No one knows this subway system better than we do."

Construction of the city's subway system began 100 years ago.

I know many people who avoid using the subway system in the summer for this reason.

All the stores in one place, and the subway system to get them here.

The 5 stations are among 468 in the subway system.

He said that way the water would enter the subway system as well.

And one can safely say, the subway system has not let him down.

Just a bite, my good man, and then back to the subway system.

The city has been discussing what to do with the right of way used by its former subway system.

Another change followed - the construction of the subway system.

A subway system allows the player to move between areas.

They designed a subway system that was critical to economic growth.

The subway system, dating back to 1906, is one of them.

The subway system said about 60 percent of trains were running.

Last year, it was 56,270 miles, the highest in the history of the subway system.

A new subway system opened here this week, only five years after construction began.

Most of her waking hours are spent in the subway system.