The main national regulations that needed to be overcome to most effectively utilize the 80mph freight / 90mph passenger or 90mph freight / 110mph passenger track that we are advocating in Phase 2 have already been upgraded, just this last year, as the FRA modernized its regulations on passenger car crash safety, from the 1960's style buff strength standards which resulted in heavy passenger cars which therefore take more time to accelerate to take advantage of higher speed limits, as well as requiring the train to start braking sooner before entering a slower speed zone.