A rush hour commuter train crashed through a barrier at the busy Hoboken station and lurched across the waiting area Thursday morning, killing one person and injuring more than 100 others in a grisly wreck that renewed questions about whether long-delayed automated safety technology could have prevented tragedy.

People pulled chunks of concrete off pinned and bleeding victims, passengers kicked out windows and crawled to safety and cries and screams could be heard in the wreckage as emergency workers rushed to reach the injured in the tangle of twisted metal and dangling wires just across the Hudson River from New York City.

The New Jersey Transit train ran off the end of the track as it was pulling in around 8:45 a.m., smashing through a concrete-and-steel bumper. As it ground to a halt in the waiting area, it knocked out pillars, collapsing a section of the roof.