> If you want to build something you first need to
> specify under what conditions it will work, and under
> what conditions it will not.
I think you have to define what "it" is. I believe you're skipping a step when you say:
> this discussion should answer three questions:
>
> 1. What are technical requirements of the tracking
> system to make it both effective and cost efficient?
>
> 2. What are the socio-economic aspects of congestion
> pricing i.e. at what price we can expect significant
> behavior modofication and what cost that price pose to
> thetarget population?
>
> 3. What are the political aspects of implementing
> congestion pricing that is technically and
> socio-economically effective (per questions 1 & 2)?
You missed one:
0. What is the goal of the effort?
Because you can track people(1), change their behavior(2), and get it passed(3) without actually achieving the goals. I believe "J&J" have shown this to be true with London.
Check ... mate?
/jordan