Hawaii's trucks work islands, so almost none of them hold interstate authority: in the census FMCSA published in October 2026, a little over 5,400 carriers give a Hawaii address, and 94 percent of them are registered for in-state work only, six in ten of them private fleets. More than eight hundred carry machinery and large objects, six hundred carry passengers, six hundred carry logs, poles and lumber, six hundred carry garbage, and 355 carry intermodal containers, which is the trade the state runs on. The freight comes over the piers: Honolulu Harbor's piers at Sand Island, Fort Armstrong and the interisland terminal, Kalaeloa at Barbers Point, Kahului on Maui, Nawiliwili at Lihue, Hilo. So the Hawaii truck is a day cab semi truck pulling a container up Nimitz Highway, the roll-off on a Kapolei route, a tour bus on the Hana road, the garbage truck that does Kaneohe before the traffic, a dump truck loading at Halawa or the Kapaa quarry at Maunawili, the tanker that filled at Sand Island, and the flatbed a Hilo contractor keeps for its own work. Any of those is a truck we would buy. To sell my semi truck in Hawaii, send the year, make, model and VIN, photos all round, a photo of the title and the island and town.
Twenty thousand on an axle, and the formula past 96 inches
Hawaii's weight law is section 291-35 of the Revised Statutes, amended as recently as 2023, and it reads the same on every public road, street and highway in the state, with no separate figure for the interstates: 20,000 pounds on a single axle, 10,000 on any one wheel, 34,000 on a tandem, which the section defines as a group of axles more than 40 inches and up to 96 inches apart, and past 96 inches the bridge formula W = 500(LN/(N-1) + 12N + 36), rounded to the nearest 500 pounds. Two consecutive tandems may carry 34,000 each where the first axle of the first and the last axle of the second are at least 36 feet apart, and the gross in that case may not exceed 80,000 pounds; a truck may never carry more on an axle than the manufacturer rated it for, or more in total than its designed gross weight.
The section hands bridge postings to the Director of Transportation on state highways and to the county engineer on county roads, and a truck may not cross a bridge posted below its gross. A five-axle container rig at the 80,000 the two-tandem case allows, a tandem dump truck at 34,000 on its drive axles, a bus and a pickup that never saw a scale are four trucks and one offer. The state's arithmetic belongs to the carrier's years on the road; the title and the photos are what we work from, and the island is a fact to tell us in the first message because it decides how the truck travels.
Four counties, no state DMV
Hawaii has no statewide motor vehicle department: the Department of Transportation says vehicle registration is managed by each county government, so a title is issued by the City and County of Honolulu's Department of Customer Services, or by the motor vehicle divisions of Maui, Hawaii and Kauai counties. On Oahu the satellite city halls that do registration and titling include Downtown at 1041 Nuuanu Avenue, Ala Moana at 1450 Ala Moana Boulevard, Kapalama at 925 Dillingham Boulevard, Hawaii Kai at 6600 Kalanianaole Highway, Kapolei at 1000 Uluohia Street and Windward City at 45-480 Kaneohe Bay Drive. On Kauai the counter is the Lihue DMV; on Maui and the Big Island it is the county's motor vehicle division, and we will point you at the right office for your island when you write.
A lost title is replaced at the county counter, a lien comes off before anything else, and a branded title is a line in your first message and no more. The rest of the islands' work: 25 racks from Sand Island and Kapolei to Kahului, Lihue, Port Allen, Hilo and Lanai City fill the tankers, 15 crushed-stone quarries run from Puunene and Waikapu on Maui to Keaau and Hilo, Kapaa and Halawa on Oahu and Kalaheo on Kauai, and 29 military installations, Pearl Harbor-Hickam, Schofield, Kaneohe, Wheeler and Pohakuloa among them, run military fleets of their own. Sleeper or day cab, heavy-haul tractor, dump truck, roll-off, mixer, garbage truck, wrecker or rotator, log truck, tanker, boom or crane truck, box truck, straight truck, utility truck, bus, pickup or dually: tell us which, and whether we should come for it, buy it where it sits, or expect you to bring it to the pier.