Actually SB1183 SD1 sounds like a dirty deal to make Oahu taxpayers finance Transit Oriented Development. The bill is loaded with confusing language- likely by design.
http://www.capitol.hawaii.gov/session2017/CommReports/SB1183_SD1_SSCR500_.htm
The SB1183 Committee Report says this:
Your Committees find that the City and County of Honolulu needs to have sufficient funds to
cover construction and financing costs of the rail project and to ensure that the full
twenty-mile guideway with all twenty-one rail stations can be built.  According to testimony,
the Honolulu Authority for Rapid Transportation estimates that the total construction costs
are $8,200,000,000, exclusive of the financing costs. 
So...
If HART needs $8.2 Billion (they say) to complete the project why does it require a FOREVER TAX? No other State or City project goes on FOREVER with a dedicated tax so why does this one? It actually sounds illegal to tax the public forever for a public works project.