The investigation into the East Palestine disaster highlights the need for more information about the trackside detectors railroads use to spot mechanical problems.the crash was caused by an overheating bearing on one of the rail cars, and they detailed why officials were wrong to The detectors railroads use along their tracks to help spot overheating bearings, flat wheels and dangling equipment were a key focus of the NTSB investigation.
The NTSB said more research and rules are needed on detectors because there are no federal standards for them. Major railroads developed the devices on their own without guidance on where they should be placed or when they should trigger an alarm. Industry research has shown that having hot box detectors every 15 miles is ideal, but investigators think more study is needed.
The DOT-111 tank cars are made with a steel shell less than half an inch thick that time and again has proven much more likely to rupture than newer cars made with thicker steel. About 25,000 DOT-111 tank cars are still in use, according to the Association of American Railroads. That's a relatively small part of the North American tank car fleet of about 450,000. Many of them carry much more harmless cargo such as corn syrup.
In the Senate, proponents for the rail safety bill have continued to express optimism that the legislation could get a vote on the floor. But so far opposition from Republicans and the railroads has kept the bill from moving forward. Similar legislation has failed to gain any momentum in the Republican-controlled House.
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