The National Transportation Safety Board says the train that crashed into a flatbed trailer carrying wounded veterans was traveling below the 70 mph speed limit.

Mark Rosekind with the NTSB said at a late Friday afternoon news conference that the Union Pacific train was going 62 mph in a 70 mph zone, based on track image recorders.

Four veterans were killed and 16 people were injured Thursday when the train struck the tractor-trailer that was towing the float.

Rosekind also said the train's emergency brakes were applied before the accident, but it is unclear how close it was to the float when that happened.

The NTSB will test the signals for abnormalities on Saturday.