The Federal Railroad Administration ordered the Metro-North Railroad to modify its signal system to control train speeds on Friday after last weekend’s deadly derailment of a New York commuter train.
The new signal system will warn engineers when a train is speeding into a dangerous section of the track. Metro-North trains will have to post two engineers in its cars wherever speed restrictions are in place until the signal system is upgraded, the Wall Street Journal reports.
Four people were killed and more than 70 were injured Sunday when a train hit a sharp curve in the Bronx traveling 82 miles per hour. The speed limit in that area is 30 miles per hour.
The National Transportation Safety Board is still investigating the crash. A lawyer for the train’s operator said earlier this week that he was in a “daze” shortly before the derailment.