April 7, 2014 6:38 pm Questions Surround Signs at Location of Fatal Queens Crash Investigators were still trying to determine the cause of Friday’s accident that left four young people dead. But many think the tragedy may have been preventable. Brynn Gingras reports. Local 0:23 Pro-Palestinian protesters take over Hamilton Hall at Columbia University 3:01 I-Team: NYPD officers testify in surveillance video controversy 1:59 2 suspects charged with murder in Long Island body parts case 2:35 Extra NYPD patrols in Central Park after series of violent crimes 3:01 Columbia begins suspending students after protesters defy deadline