Overview

• NTSB confirmed the derailment was caused by an overheating bearing undetected in time by trackside sensors.
• The decision to burn vinyl chloride tank cars was deemed unnecessary and based on misinterpreted evidence.
• Norfolk Southern accused of delaying and withholding critical information during the investigation.
• Calls for stricter federal regulations on trackside detectors and tank car safety standards are intensifying.
• Proposed rail safety legislation faces opposition and delays in Congress despite public outcry.