HART and city of Honolulu issue RfPs for transit PPP, US September 28, 2018 | North America News The Honolulu Authority for Rapid Transportation (HART) and the City and County of Honolulu have issued Part 1 of their request for proposals (RfPs), which invites private sector partners to complete t... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password