[Guvmint_Cheese]

Are you suggesting use of existing heavy rail lines or the construction of new ones? If existing, you are going to have to get permission from the owners to share the track. If new, where would you find the right-of-way to run commuter rail? You're going to have an Environmental Justice issue to deal with if you plan on tearing down existing homes.

[kaktuskid]

Any body that puts a trolley line down the center of a major street is an idjit..that was the reason the tracks were taken out of the streets back in the 50s!