One train was used as a spare should another be taken out of service.

The train was used to run on daily basis from both the sites.

I believe such trains are used in other countries effectively.

The trains used on the line are manufactured in China.

A single train is used for weekend service, making three round trips each day.

This became necessary so that electric trains could be used as well.

About 40,000 people use trains across the bridge each rush hour, he said.

Typically, two trains are used daily, with a third sometimes put into service on busy days later in the morning.

Within a few days every train will be used to carry troops.

I had never met anybody who used trains to give himself a false sense of activity.