In November, 2016, a Hoboken (NJ) commuter train crashed into the station platform at double its allowable speed causing falling debris and the unfortunate death of a woman standing on the platform. About 100 were injured. Just prior to the crash, the train reportedly sped around a curve at over 80 mph. The speed limit was 30 mph.
A few months later, a train on the Long Island Railroad crashed into the end of a track at the Atlantic Terminal Station in Brooklyn causing 108 injuries and over $5 million in damages.
In 2013, a few years prior, a Metro-North Railroad Hudson Line train (New York City) crashed into a curve at a speed 3x the allowable limit causing 4 fatalities, 61 injuries and $9 million in damage.
The cause of all three train crashes was sleep apnea.