Acela System News Today

On an acela train last night, this accident would not have happened because there is automatic train stop that is part of the acela system. so it is possible to do this even though we dont have positive train control implemented nationwide. and frankly, i dont understand why we havent implemented positive train stop on the northeast corridor. we can do it. >> professor, let me ask you about that the automatic train stop. how is it to put in trains and trains that dont have it as in this one? >> ...