A train collision last year that killed four has been blamed on design faults in a railroad crossing.

The National Transportation Safety Board this week released findings from its investigation into a 2022 collision involving an Amtrak train and a dump truck. The truck driver and three train passengers were killed in the accident and another 146 train passengers and crew were injured. The accident caused both of the Amtrak’s engines and all eight of its rail cars to derail.