Hawaii Revised Statutes Division 1. Government § 291C-148

(a) Except as provided in subsection (b), no person shall drive any vehicle upon a sidewalk or sidewalk area except upon a permanent or authorized temporary driveway.

(b) Unless otherwise prohibited, a bicycle may be driven at a speed of ten miles per hour or less on a sidewalk or sidewalk area; provided that the driver of the bicycle shall yield the right-of-way to any pedestrian and that bicycle riding shall be prohibited on sidewalks in business districts.

(c) This section shall not be construed as preempting the director of transportation's or counties' authority to control parking on sidewalks under section 291C-114. Nor shall this section be construed as prohibiting the director or a county from authorizing parking on sidewalks when the authorization is promulgated in accordance with section 291C-114.