This page provides a detailed guide to Hawaii’s vehicle light laws, including legal colors, emergency lighting rules, flashing light restrictions, and underglow use.
Standard Lighting Requirements
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Headlights & Taillights:
- Vehicles must have two front headlights emitting white light at night or when visibility is poor, visible from up to 200 ft.
- Rear lights must emit red, with a white backup plate light visible from 50 ft.
Emergency Vehicle Lights
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Police Vehicles (County Agencies):
- Only blue lights (or blue & red combinations) are allowed, and only with proper authorization per county statutes under § 291‑31.5.
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Fire Department Vehicles & Ambulances:
- Typically use red (plus white/amber for visibility). Authorization follows statutes similar to § 291‑31.5.
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Volunteer Fire Vehicles:
- Considered emergency vehicles, if approved by the County Council—eligible to use red lights when activated.
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Tow Trucks & Utility Vehicles:
- No specific statewide rules, but they cannot use blue (or blue/red) lights unless operated by the Department of Public Safety with permission.
- Locally, amber or white strobes/flashers are common, but must comply with visibility requirements
Prohibited Lighting
- Any red or blue lights visible from the front of a vehicle are illegal unless on an authorized vehicle.
- Green or purple lights are also forbidden when visible from the front.
- Flashing/revolving lights are illegal on non-emergency vehicles—exceptions apply for turn signals, funeral escorts with amber lights, escorts for wide loads, street sweepers, tow vehicles engaged in operations, and disabled vehicles using hazard lighting.
Underglow & Aftermarket Lighting
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Underglow (neon/LED) lights are legal, provided they:
- Are solid (non-flashing) in operation,
- Use only white or amber, and
- Are not visible from the front in red, blue, green, or purple.
- Flashing or multi-color underbody lights visible while driving are prohibited:
- Illegal to have the underglow on while driving on public roads. It is acceptable just for use while parked.
Enforcement & Penalties
- Violations can incur fines up to $1,000 and potential jail time up to one year for misuse of red/blue lights.
- Flashing lights or unapproved colors can result in misdemeanor charges, with fines up to $10 per offense under local ordinances.
Quick Reference Table
| Vehicle Type | Permitted Colors | Flashing Allowed? | Notes |
|---|---|---|---|
| Police (county) | Blue (± red) | Yes | Only with county authorization (§ 291‑31.5) |
| Fire dept. / Ambulance | Red (± white/amber) | Yes | County-level regulation applies |
| Volunteer Fire Vehicles | Red | Yes | Requires County Council approval (§ 291C‑1) |
| Tow / Utility / Construction / Escorts | Amber / White | Yes (if escort) | May flash only during operations |
| Passenger Vehicles (non-emergency) | Front: white/amber Rear: red |
No | No red/blue/green lights visible forward |
| Aftermarket Underglow (private use) | White / Amber (non-flashing) | No | Must be off when driving or after dark |
Hawaii strictly reserves red and blue lights for emergency vehicles, mandates white/amber for front lighting on civilian vehicles, and prohibits flashing or colored underglow while driving. Solid, white/amber underglow when parked is generally allowed—anything else risks significant penalties.
Note: This guide is for informational purposes and does not constitute legal advice. For specific legal guidance, consult the Hawaii Department of Public Safety or a legal professional. If something is incorrect and you would like to suggest an edit, please contact us.
