Hawaii Revised Statutes Division 1. Government § 291C-55

(a) Upon any roadway having three or more lanes for traffic moving in the same direction, no commercial vehicle weighing ten thousand pounds or more shall be driven in the far left lane unless:

(b) This section shall not apply to commercial vehicles occupying the left lane for the purpose of turning left or exiting, or preparing to turn left or exit.

(c) For the purposes of this section, “commercial vehicle” shall have the same meaning as in section 291-11.5. “Commercial vehicle” does not include buses or van pools operated by the counties.