Hawaii Oversize Load Permit Requirements
Legal truck dimensions, oversize load travel hours, pilot car and escort requirements, and how to order an oversize/overweight permit from Hawaii DOT Highways Division (island district permit offices).
HI, reviewed October 2026
Check your load for Hawaii
Oversize permit required in Hawaii
- Width 10 ft 0 in exceeds the 8 ft 6 in legal limit.
No width-based pilot car at 10 ft 0 in wide.
Hawaii Truck Legal Width, Height & Length
A truck and load at or under these dimensions can travel Hawaii highways without an oversize permit. Exceed any one of them and you need a permit before you move.
| Legal width | 8 ft 6 in |
|---|---|
| Legal height | 14 ft 0 in |
| Legal length | Single motor vehicle 45 ft; tractor-semitrailer 65 ft overall on non-interstate/non-designated roads (semitrailer max 48 ft); no more than two units in a combination (HRS 291-34). Legal width is 9 ft. |
| Gross weight | 80,000 lbs |
Hawaii Oversize Load Travel Hours
- Daily movement window
- Hours are specified on the permit; no statewide daylight/night rule in HAR 19-104. Movement can be barred when the district engineer expects extremely heavy traffic.
- Weekend movement
- Saturday, Sunday and state-holiday movement may be permitted at the district engineer's discretion.
- Holiday restrictions
- HAR 19-104-11(17): movements on Saturdays, Sundays and state holidays may be permitted at the discretion of the district engineer. No fixed holiday blackout window is published. See this year's holiday dates for all states.
Hawaii Pilot Car Requirements
Loads exceeding 12 ft wide require an escort vehicle; an extra escort may be required depending on road and traffic, escort may be needed over 10 ft on winding two-lane roads, and projections over 4 ft need an escort.
| First pilot car (width) | 12 ft 0 in wide and over |
|---|---|
| Two pilot cars (width) | Not confirmed: check your permit conditions |
| Height-pole escort | Not confirmed: check your permit conditions |
| Length escort | Not confirmed: check your permit conditions |
How to order a Hawaii oversize permit
Hawaii DOT Highways Division (island district permit offices)
Overweight as well? Check axle limits with the bridge formula calculator.
Hawaii Oversize Load FAQs
- What are the oversize load travel hours in Hawaii?
- Hours are specified on the permit; no statewide daylight/night rule in HAR 19-104. Movement can be barred when the district engineer expects extremely heavy traffic. Weekends: Saturday, Sunday and state-holiday movement may be permitted at the district engineer's discretion.
- When is a pilot car required in Hawaii?
- Loads exceeding 12 ft wide require an escort vehicle; an extra escort may be required depending on road and traffic, escort may be needed over 10 ft on winding two-lane roads, and projections over 4 ft need an escort.
- What is the legal truck width in Hawaii?
- The standard legal width in Hawaii is 8 ft 6 in (102 inches), the federal minimum width allowed on the National Network of highways. A load wider than that needs an oversize permit.
- How tall can a truck be in Hawaii without a permit?
- The legal height limit in Hawaii is 14 ft 0 in, measured from the road surface to the highest point of the vehicle or load. Taller loads need an oversize permit and a surveyed route for bridge and wire clearances.
- Can oversize loads move on holidays in Hawaii?
- HAR 19-104-11(17): movements on Saturdays, Sundays and state holidays may be permitted at the discretion of the district engineer. No fixed holiday blackout window is published.
- How do I get an oversize or overweight permit in Hawaii?
- Apply through Hawaii DOT Highways Division (island district permit offices) ((808) 831-6700 ext. 107 (Oahu)) or its online permit portal. Have your USDOT number, vehicle and load dimensions, axle weights and route ready. Permit expediting agents can file on your behalf if you need the permit the same day.
Regulations change. This page summarises published Hawaii rules as reviewed October 2026 and is not legal advice; the conditions printed on your permit control. Note: Each island district office issues permits (Oahu 831-6700 x107; Maui 873-3535; Hawaii Island 933-8866; Kauai 241-3000). Permit fee $5-$25 per HDOT page (a secondary source says fees currently waived; unverified). Overwidth 14 ft or wider: 25 mph max and escort/flagman/police required. HAR still prints 13.5 ft height; statute HRS 291-34 says 14 ft. Gross weight 80,000 per HRS 291-35 (80,800 only for two consecutive tandems per HAR).