eight people were killed and more than 200 were seriously injured, including the engineer. now the federal government is calling for nationwide changes for passenger trains including warning signs where speed limits drop more than 20 miles per hour. if the train doesn't have automatic braking technology, requiring the crew member to stay in contact with the engineer through danger rourks high-speed areas. and if the trains do have that technology they must be checked and calibrated for speed. another key development will be installation of speed control technology throughout the busy northeast corridor. amtrak's pledge to have that in place by the end of this year. federal investigators have said there were no mechanical problems with train 188 and there were no issues with the track. so they're still looking into what exactly caused that derailment. brandi, t.j.? >> okay, karen. thank you. powerful storms are battering florida's east coast. near port saint lucie, drivers made their way through the