In Hawaii, any load that exceeds the legal size or weight limits requires an oversize/overweight permit before it moves. Below are the legal limits and the requirements that apply at each threshold.
1When you need a permit
A load is oversize or overweight once it passes any of these:
| Dimension | Hawaii legal limit | Permit if over |
|---|---|---|
| Width | 9 ft | Wider |
| Height | 13 ft 6 in | Taller |
| Length (combination) | 65 ft | Longer |
| Gross weight | 80,000 lbs | Heavier |
| Single axle | 24,000 lbs | Heavier |
| Tandem axle | 34,000 lbs | Heavier |
Rear overhang is limited to 4 ft and front overhang to 3 ft before it counts toward length, and any overhang must be flagged.
2Escort & pilot car requirements
| When the load reaches… | Hawaii requires |
|---|---|
| 12 ft wide | 1 escort (pilot car) |
| 999 ft wide | 2 escorts |
| 999 ft high | Escort with a height pole / pole car |
| 999 ft long | 1 escort · 999 ft → 2 escorts |
| 999 ft high or 999 ft wide | Route survey required |
3When you can travel
- Daylight only — 30 min before sunrise to 30 min after sunset.
- Weekend travel allowed within dimensional limits.
- Holiday blackouts: New Year's Day, Memorial Day, July 4th, Labor Day, Thanksgiving, Christmas.
4Superloads in Hawaii
A load is a superload once it exceeds any of these:
| Superload trigger | Threshold |
|---|---|
| Width | 14 ft |
| Height | 14 ft 6 in |
| Length | 80 ft |
| Gross weight | 105,000 lbs |
Superloads require a route survey and roughly 15 days of lead time for approval.
5Permit timing
- Standard single-trip: ~5 business days to issue.
- Superload: ~15 days (route survey + review).
- Validity: a single-trip permit is good for ~30 days.
Get the full cost of your load
FreightDeck estimates every cost on an oversize move — permits, escorts, police, route survey, engineering, and the truck rate — for your exact load and route, across all 48 states and Canada, up to superload size.
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?Hawaii permit FAQ
When do I need an oversize permit in Hawaii?
Once a load exceeds any legal limit: 9 ft wide, 13 ft 6 in high, 65 ft long (combination), or 80,000 lbs gross.
When do I need a pilot car in Hawaii?
Hawaii requires one escort at 12 ft wide (two at 999 ft), a height pole at 999 ft high.
Can you drive an oversize load at night in Hawaii?
No — oversize loads move daylight-only, 30 min before sunrise to 30 min after sunset. Weekend travel is allowed within limits.
What counts as a superload in Hawaii?
Over 14 ft wide, 14 ft 6 in high, 80 ft long, or 105,000 lbs gross. It requires a route survey and about 15 days of lead time.
How much does a Hawaii oversize permit cost?
The state permit fee depends on the load's size and weight. The full cost of a move also includes escorts, police, route surveys, engineering, and the truck rate, which vary by route. FreightDeck estimates all of it for your exact load — price your Hawaii load with FreightDeck →.
Sources
- https://law.justia.com/codes/hawaii/title-17/chapter-291/section-291-36/
- https://law.justia.com/codes/hawaii/title-17/chapter-291/section-291-34/
- https://hidot.hawaii.gov/highways/files/2012/12/HAR19-104.pdf
- https://hidot.hawaii.gov/highways/home/doing-business/guide-to-permits/oversized-and-overweight-vehicles-on-state-highways/