NextGen U.S. highway traffic overhaul aims to improve safety with new technology . It is switching from radar tracking to more accurate GPS tracking . He 'll mark the fifth anniversary of the crash in a ceremony at the University of Kentucky arboretum , where he will help unveil a 25-foot memorial statue depicting 49 silver birds forever suspended in flight . Steps being taken to protect GPS - based tracking from ` ` spoofing '' hackers . DOT worries about data gaps unless authorities focus on tracking coverage .
NextGen U.S. highway traffic overhaul aims to improve safety with new technology . It is switching from radar tracking to more accurate GPS tracking . Steps being taken to protect GPS - based tracking from ` ` spoofing '' hackers . DOT worries about data gaps unless authorities focus on tracking coverage .