Amtrak plans to increase its security measures by randomly screening passengers’ bags and deploying armed security officers on trains and platforms, the railroad stated on Monday night.

Details of the new security plan will be made public Tuesday, Amtrak’s spokesperson Tracey Connell, said, according to the Associated Press.

The new security measures come following several terrorist attacks that have targeted trains in recent years. In 2004, bombings of commuter trains in Madrid, Spain, killed 191 people. A series of bombings in London in 2005, most of them on subway trains, killed 52 people.

However, Amtrak chief executive Alex Kummant told the AP the new measures are not a response to a “new or different specific threat,” but rather, he said, “just the correct step to take.”

Amtrak’s new “mobile security teams” will go into action soon on the Northeast Corridor between Washington and Boston, the railroad’s most heavily used route. Later, they will be expanded to the rest of the country.

According to Kummant, passengers will not have to arrive at stations far in advance, and those selected randomly for screening will be delayed no more than a couple of minutes. He also said security teams would show up unannounced at stations and set up baggage screening areas in front of boarding gates. The screening personnel may open the baggage for a hands-on inspection if the detection devices indicate a problem.

The Transportation Security Administration, which already conducts sporadic deployments of security teams, called VIPR teams, to train stations around the country, welcomed the Amtrak initiative.

“Anytime security is enhanced, we are very supportive, and this random, unpredictable model is one we strongly endorse and practice ourselves through VIPRs and other initiatives throughout transportation system,” TSA representative Christopher White said quoted by CNN.