. >> kakaboom, the whole place shook. >> debris killed 34-year-old -- as she waited on the crowded platform. more than 100 others were hurt. all the mechanical systems were working properly should have stopped this train. >> it will be required by 2018. the train's engineer, 48-year- old was released from the hospital and is cooperating with investigators. >>> now, we are told investigators will go through gallagher's last 72 hours and take a close look at his medical history. we are live in hoboken. >>> you heard a moment ago. today's crash is renewing calls for the system new jersey doesn't have. it's designed to automatically slow trains that are speeding and prevent them from derailing or crashing. the nba is working to install that technology and says all states have to install it by the end of 2018. witnesses say the train was traveling too fast, investigators are just happened and they cannot get into the station right now because it's too dangerous. we will bring you the latest at cbs boston.com. >>> things developing tonight. a chain of local day cares shut down after reports of de