The Public Safety community will be better served with less expensive communications equipment since it will be based on a worldwide technology (LTE).

FORBES: Public Safety Broadband Could Pump $10 Billion Into Wireless Firms

Nine safety board teams will examine aspects such as train operations and communications, signals, tracks, crash-worthiness of equipment, maintenance and survivability -- ease of fleeing the trains after the crash and other survivability factors, Hersman said.

CNN: Investigator: D.C. Metro crash 'a scene of real devastation'