On a Saturday morning trip to downtown Los Angeles, a Metro Expo Line train pulled out of a station in Exposition Park, its three cars filled with passengers.
Traffic signals along Exposition Boulevard turned red, and lights flashed to signal the approach of the train, which had "watch for trains" printed in yard-high letters on the front car.
But the warnings weren't enough.
Just before 11 a.m., a driver in a silver Hyundai sedan turned left across the tracks toward a USC campus gate and collided with the train. The crash pushed two of the Metro light-rail cars onto Exposition and left 12 people hurt, one critically.
The crash is renewing a...