Here's some reasons why the HART Board does not want to do a forensic audit:

From HonoluluTraffic.com, July 4, 2017

In the May 18, 2010 issue of Hawai’i Free Press, they write, "We are reprinting excerpts from an April 23 letter to Honolulu Councilmember Ann Kobayashi from Honolulu Attorney John C. McLaren who wrote “on behalf of former Governor Ben Cayetano and other unidentified people” according to the May 6 Advertiser. 

McClaren then lists a number of allegedly flagrant violations of the law including the following:

"The most egregious an example is InfraConsult, LLC (“InfraConsult”) (formed by three former Parsons Brinckerhoff employees) that was awarded a contract for Project Management Support Services for the Honolulu High Capacity Corridor Project in the amount of $36,727,162.00 from a Short List listing only InfraConsult and no other persons.

"The InfraConsult contract was awarded on November 19, 2009 and the award was posted the following day on the State & County Professional Service Awards website. This appears to be an exceptionally short time period in which InfraConsult had to:

• "complete scoping all of the details of work specified in the contract proposal,
• "complete all negotiations with the City, and
• "obtain all signatures and approvals, for such a large contract,

"unless InfraConsult knew well in advance of November 19, 2009 that it was assured of receiving this award, and it had also completed virtually all of these steps before the award was announced."

Further details at Hawai’i Free Press at this location.