HAR §19-129-18. of the work site

Additional high level warning devices may be placed between the first high level warning device and the work site. (6) Where the speed limit is twenty-five miles per hour or less, except as provided in paragraph (7) of this subsection, an advance warning sign shall be placed, on each approach affected by the work, approximately two hundred feet in advance of the work site. Additional warning signs may be placed between this sign and the work site. Exceptions may be permitted by the authority upon application of the person performing the work where placement of the advance warning sign may not be feasible or may cause confusion. (7) Where the speed limit is twenty-five miles per hour or less and the work being performed is engineering survey, service, maintenance, or inspection work which is being performed during off-peak hours, does not interfere with traffic movement, and lasts no longer than three hours, a high level warning device as described in paragraph (4) of this subsection may be used in lieu of the advance warning sign. It shall be placed, on each approach affected by the work, approximately two hundred feet in advance of the work site. [Eff: AUG 26 1982 (Auth: HRS §286-8) (Imp: HRS §286-8)