HRS §291-28
Red light and flag for loads sticking out the back
Read the official text at capitol.hawaii.gov ↗If a vehicle's load sticks out more than four feet past the rear of the bed or body, the driver must put a red light at the very end of the load at night or in bad visibility, and a red flag or cloth at all other times while on a public road. The light must be visible from at least 200 feet away, and the flag must be at least 16 inches square.
everyone
The statute, as written — Lights for loads
A copy, taken August 20, 2026. The version published by the Legislature is the one that governs, and it may have changed since. Check it before relying on anything here.
In any case where a vehicle is loaded with any material in such a manner that any portion of the load extends toward the rear four feet or more beyond the rear of the bed or body of the vehicle, there shall be displayed at the extreme end of the load, at the times and under the conditions hereinbefore specified, in addition to the ordinary rear or tail light hereinbefore required to be displayed on the vehicle, a red light plainly visible under ordinary atmospheric conditions at least two hundred feet from the rear; provided that at other times while the vehicle is upon the public highway, a red flag or cloth not less than sixteen inches square shall be displayed at the extreme rear of the load. [RL 1945, pt of §11707; RL 1955, §311-10; HRS §291-28]
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.