speed the speed limit at that section of the track. at the curve, it was 50 miles an hour. the train was going 106 miles an hour. another thing they are telling us is this section of the track near philadelphia did not have positive train controls. that is an expensive piece of technology but mandated by congress to be placed on all rail lines in the united states by the end of 2015. it was not placed in this section of the track near philadelphia. what is positive train control? an automatic override system to warn the engineer if the train is too fast for a section of track. if the engineer does not heed that warning, the on-board system kicks in. that was not placed in the portion of the track. the ntsb says if it had been this crash may not have happened. we are learning the identity of the engineer. 32-year-old brandon bostian of new york. what we re told is he made an initial appearance before the philadelphia police.