Hawaii Revised Statutes Division 1. Government § 291C-93

(a) The driver of any motor vehicle carrying passengers for hire, or of any school bus carrying any school child, or of any vehicle carrying explosive substances or flammable liquids as a cargo or part of a cargo, before crossing at grade any track or tracks of a railroad, shall stop such vehicle within fifty feet but not less than fifteen feet from the nearest rail of such railroad, and while so stopped shall listen and look in both directions along the track for any approaching train, and for signals indicating the approach of a train, except as hereinafter provided, and if a train is approaching, and is approximately within fifteen hundred feet of the crossing, shall not proceed until after the train has passed. After stopping as required herein and determining that no train is approaching, the driver of any such vehicle shall cross only in such gear of the vehicle that there will be no necessity for changing gears while traversing the crossing and the driver shall not shift gears while crossing the track or tracks.

(b) No stop need be made at any such crossing where a police officer or a traffic-control signal directs traffic to proceed.

(c) This section shall not apply at street-railway grade crossings within a business or residence district.