Workers labor on the site where a deadly train derailment occurred earlier in the week, on May 15, 2015, in Philadelphia.


Amtrak says it will immediately abide by an order by federal regulators to expand use of a speed restriction system in the area of Tuesday’s deadly train derailment that killed eight people and injured more than 200 others.

The Federal Railroad Administration said Saturday it wants Amtrak to put in effect the automatic train control system for northbound trains approaching the curve where the train derailed. The system is already in effect for southbound trains.

The system notifies the engineer when a train is above the speed limit and automatically applies the brakes if the engineer doesn’t slow the train down.

The agency also ordered Amtrak to analyze curves on the Northeast Corridor and install appropriate technology where needed and increase speed limit signs. Amtrak has said it plans to install a next-generation speed control system by year’s end.