There has been long discussion on this in Tas thread on this and studied by govt with a proposal raised for LR. but question is Tas does not have the money to fund such a project.
Ok, so hypetically the most probably route is Hobart to Claremont, 13km of former ROW + on street running around town in a "9" style loop", say 3km.
- Needs mostly duplication, not too hard, used to be dual track, but there is now a bike track there, still not to hard but does add to complexity.
(TTMS would again be isolated)
- 13km of mostly dual track converted to SG and OH added, few hundred million $ there. The existing line offers anything in the form or savings.
- The existing 3.5 km route around the gardens offers almost nothing in regards to PT and would be abandoned to a bike track, the alternative option is to run up through north Hobart street running. Another few hundred million $
- Say 2.5 km of double track feeding into balloon route km around Hobart CBD, $150 - 200m
- OH where practical with battery operation where not would be the smartest approach. Considering a long run under the wire a battery would work ok with OH at stops.
Future extension would be street running down to the uni and Casino area. Another few hundred million.
All this is a state who's budget is $6.5 B and spends aroudn $750m on capital expenditure.
Do I support the project? Yes, but like SA, will need significant Fed funding to make it viable.