mass transit (sic)

[Wojtek Sokolowski]

At 02:22 PM 6/7/2002 -0400, max wrote:
>Because of the externalities there is no reason why a
>transit system needs to be self-financing.  In fact, from
>an efficiency standpoint it *should* run at a deficit and
>scale up to the point where marginal benefits (private and
>social) = marginal costs (ditto).

How do you value marginal benefit of public transit?

wojtek