I wouldn't say that every area has room for adding more tracks...(unless the mean south of Penn Station in New York.) Because here in Connecticut the tracks rarely have a RR crossing(I think they only have 2 level crossings) and the rest either have to go under,or over the tracks,with that said it would take to much money and disrupt to much traffic to widen the overpasses/underpasses to accommodate more then the 2 tracks there now.
And the NEC in New Jersey is already pushing the capacity of the ROW with 6 tracks,if they get much wider they will be spilling over into people backyards,not to mention they would have to push all the stations back in NJ to also accommodate the new tracks,back in Connecticut you would not only have to move the stations back,but also clear the land of brush trees,houses,marshes etc. Which is just not feasible,and then the route will become an evil eyesore to the beutiful New England atmosphere....
Yea Iced looks like I should get to work:hehe: Maybe I can beat them to it!