Dump truck and hotshot work in NC: weights, tarps, CDLs and logs

The short version

For interstate hotshot work, the federal line is 10,001 pounds, counting the truck and trailer ratings together. Above it you need a USDOT number, a medical card and logs, unless an exception fits. [8][11][29]

A Class A CDL starts at 26,001 pounds combined when the trailer is rated over 10,000 pounds. The rating or the actual weight counts, whichever is greater. [9][10]

A local tri-axle dump truck is still a regulated NC carrier. It needs "USDOT ... NC" markings, $750,000 of liability insurance and, for rock and gravel, a tarp plus 6 inches of freeboard. [23][24][20][2]

NC gives dump trucks some extra weight, but only in narrow cases, never on interstates, and only if the truck is registered for it. [1][3]

Hotshot: when a pickup becomes a commercial truck

Under 49 CFR 390.5, a truck used in interstate commerce is a commercial motor vehicle at 10,001 pounds or more. The test uses the gross vehicle or combination weight rating, or the actual weight, whichever is greater. [8]

Because trailer ratings count, a pickup rated under 10,001 pounds can cross the line once it hooks a gooseneck. Check the rating plates on the door jamb and the trailer, not the pickup alone. [8][29]

NC applies federal Parts 390 through 397 on its highways to interstate carriers whose trucks meet that federal definition, whether for-hire or private. [27]

Anyone covered by Part 391 must be medically certified and carry the medical certificate, or a copy, while on duty. That applies to a hotshot driver even without a CDL. [11]

The Highway Patrol's FAQ says a business truck or truck and trailer rated 10,001 pounds or more that crosses state lines generally needs a medical card, a USDOT number and the company name on the power unit. [29]

Interstate carriers file Form MCS-150 before starting and update it every 24 months. For-hire carriers also need operating authority under federal law, and $750,000 of liability insurance for general freight. [31][32][20]

When the hotshot rig needs a CDL

Federal Group A, which NC issues as Class A, covers a combination rated or weighing 26,001 pounds or more when the towed unit is rated or weighs over 10,000 pounds. [10][9][25]

The CDL rule covers trucks "used in commerce," not only interstate trips. So a hotshot that stays inside NC still needs a Class A once it passes those numbers. [9][25]

Group B covers a single truck rated 26,001 pounds or more, or one towing a trailer rated 10,000 pounds or less. A dump truck rated 26,001 pounds or more falls here. [10]

The Highway Patrol's FAQ notes that at 26,001 pounds, drug and alcohol testing applies too, and that air brakes alone do not trigger a CDL. [29]

Many hotshot carriers keep the whole rig rated under 26,001 pounds to run without a CDL. That only works if the ratings and the actual loaded weight both stay under the line. [9][10]

Dump trucks and NC intrastate rules

Most dump trucks never leave the state. NC applies federal Parts 390 through 397 to intrastate trucks at 26,001 pounds or more, or those carrying placarded hazmat. [27][21]

Intrastate drivers follow NC's own hours limits: no driving after 12 hours of driving or 16 hours on duty following 8 hours off, and no driving after 70 hours in 7 days or 80 in 8. [27]

Under G.S. 20-101(b), a truck rated over 26,000 pounds in intrastate commerce must show the owner's name and "USDOT" number followed by "NC" on both sides, in letters at least 3 inches tall. [23]

G.S. 20-309(a1) requires owners of CDL-class trucks, which includes any Class B truck, to carry the federal $750,000 level. That covers a local tri-axle dump truck rated 26,001 pounds or more. [24][25][20]

For-hire intrastate carriers also register with NCDMV and verify insurance for each for-hire truck under G.S. 20-382.1. Trucks over 10,000 pounds in NC work still need periodic inspections. [26][27]

NC weight limits and the dump truck exceptions

G.S. 20-118 sets 20,000 pounds on a single axle and 38,000 on a tandem. Any group of axles is also capped by a table based on the distance between them. [1]

The Highway Patrol's weight chart shows, for example, 51,000 pounds for three axles spread 20 feet apart. A steer-plus-tandem dump truck gets whichever limit is lower. [30][1]

The 10% tolerance in G.S. 20-118(h) applies to axle groups and gross weight only. It never raises a single or tandem axle, never passes 80,000 pounds, and never applies on interstates. [1]

Loads of bulk soil, rock, sand or asphalt millings from a site without a certified scale may run 4,000 pounds over the gross limit, capped at 22,000 per single axle and 42,000 per tandem. [1]

That allowance does not apply on interstates, on posted light-traffic roads or over posted bridges. Light-traffic roads are state roads NCDOT posts below normal axle limits. [1]

Aggregates hauled from an NC border county into the next state can reach 69,850 pounds with a weight ticket in hand. That rule is for trucks with three rear axles within 8 feet, not a usual tandem dump truck. [1]

Ready-mix concrete trucks have their own higher limits under G.S. 20-118(c)(16), also off interstates and light-traffic roads, with no tolerance. [1]

Overweight penalties for single and tandem axles start at 4 cents a pound and rise to 10 cents a pound past 2,000 pounds over. Officers can hold the truck until penalties are paid. [1][4]

License weight: register the whole rig

NC license weight for a truck is its empty weight plus the heaviest load it will carry, as the owner declares. For a truck and trailer, that includes the trailer's weight and load. [3]

The Highway Patrol's FAQ makes the hotshot point plainly: the owner must buy enough license weight for the truck, trailer and load together. [29]

Running heavier than your declared weight is a violation, penalized at the axle-group rates. A dump truck using the extra weight above must be registered for the higher maximum. [3]

Farmer-rate plates cannot be used for hauling for hire. Every truck or truck-and-trailer rated 10,001 pounds or more must pull into NC weigh stations, pickups included. [3][29]

Tarps and freeboard for rock, gravel and sand

G.S. 20-116(g) says no load may fall, blow, sift, leak or escape from a vehicle, and the body can't have holes the load can escape through. Rainwater doesn't count. [2]

A truck licensed over 7,500 pounds hauling rock, gravel or stone needs both: the load kept 6 inches below the tops of the sides at loading, and a tarp or other secure cover. [2]

Sand, and rock or gravel in lighter trucks, needs only one of the three: 6 inches of freeboard, a tarp, or a body built to hold the load. [2]

A violation is an infraction with a penalty of up to $100 unless another penalty applies. Court costs are extra. Federal rules also require a commercial truck's tailgate and tarp to be secured. [6][7][14][15]

In 2023, a Highway Patrol sergeant told WFDD that any officer can enforce the state load law, and that drivers can report an unsecured load by calling *47. [33]

NC lets a truck with a single plate mount it on the front if the load could cover or damage a rear plate. That is common on dump trucks. [28]

Logs, ELDs and securing equipment

Most local dump work runs under the short-haul exception. Stay within 150 air miles of your reporting spot and be released within 14 hours, and you need time records, not logs or an ELD. [12]

Drivers who don't need a CDL have their own short-haul rule. They may drive until the 16th hour on duty on two days in any seven, if they return to the same place each day. [12]

Drivers who mainly haul construction materials and equipment can restart their weekly clock after 24 hours off, instead of the usual 34. [12]

Paper logs are allowed instead of an ELD if you need logs 8 days or fewer in any 30, or the truck was built before model year 2000. [13]

On a flatbed, check cargo within the first 50 miles, then at each duty change or every 3 hours or 150 miles, whichever comes first. [14]

Wheeled or tracked equipment of 10,000 pounds or more needs at least four tiedowns, with buckets lowered and secured. Lighter machines follow the general tiedown count by length and weight. [19][18]

Dump bodies carrying sand, gravel or other loose loads are exempt from the general tiedown rules, but the tarp law still applies. [17][2]