SAN FRANCISCO — The first Amtrak train to run on track in the Mall opened Monday, opening up a new era for the world-famous shopping destination.

The new trains, which were built in partnership with the New York City Transit Authority, will run between the Grand Central Terminal and the Mall, about one-half of a mile (1.6 kilometers) away from the Mall’s entrance, according to the MTA.

The train runs at a maximum speed of 40 mph (65 kph) and stops every 20 minutes at its designated stop, said the MTA’s public information officer, Tom B. Stebbins.

The MTA plans to operate the trains on a first-come, first-served basis during peak periods, so that riders have more time to get on the train.

In addition to the trains, the MTA has installed two more platforms in the mall for passengers to board the trains and board the other side.

The MTA plans on expanding the train network further in the future to connect with more other commuter rail lines, which are already in operation in New York, Los Angeles and Chicago, and will include the first trains to run through the city and the New Jersey-based commuter railroad that is slated to run from Newark, New Jersey, to New York in 2018.