Most trucking businesses need two expensive things: a tractor and a trailer. Power only takes away the second. You run a tractor, someone else owns the trailer, and you get paid to move it. That simple trade shapes everything about how power only carriers find loads, plan weeks and manage risk.
How power only works
Three kinds of companies provide the trailers:
- Shippers with their own fleets of trailers parked at plants and distribution centers.
- Brokers and logistics companies that run trailer pools and drop yards for their customers.
- Carriers with more trailers than tractors, who hand overflow to outside power.
The trailer is often loaded and sealed before you arrive. You check in at the yard, inspect and hook the assigned trailer, deliver it, drop it in a door or a slot, and look for the next one. Unlike live loading, you rarely wait on the dock. Our types of truck trailers guide shows where power only fits among the other setups, and power only loads covers where the freight comes from.
Who power only suits
| Good fit | Harder fit |
|---|---|
| Owners who don't want a trailer payment | Owners far from any trailer pools |
| Day cab and regional operators | Carriers who want any load on any board |
| Carriers with clean inspection records | Brand-new MCs some programs won't approve yet |
| Drivers who like drop and hook | Drivers who want long, steady OTR runs only |
What it costs and saves
Power only removes the trailer from your fixed costs: no trailer payment, trailer insurance, trailer plates or trailer repairs. You still pay for the tractor, fuel and your own insurance, and most programs require trailer interchange or non-owned trailer coverage.
- Trailer payment
- $0
- Trailer physical damage insurance
- Replaced by interchange coverage
- Trailer plates and repairs
- $0
- Deadhead to and from yards
- Goes up
The catch is the last line. Power only adds empty miles to yards and from drops, and those miles eat into the savings unless the hooks and drops are planned close together. Check any load's real profit, deadhead included, with the load profitability calculator.
The trailers you'll pull
Most power only freight moves in 53 ft dry vans, but you'll also see reefers (where the shipper fuels the unit or expects you to), flatbeds, and intermodal containers on chassis at rail ramps and ports. Each has its own checks at the hook. Trailer details and what to inspect are in power only trailer, and container work in power only intermodal loads.
Getting started
- Authority and insurance in order. Active MC and DOT, liability and cargo, plus trailer interchange coverage at the limits programs ask for.
- Clean safety record. Programs check inspections and out-of-service rates before approving.
- Apply to programs and brokers that run trailer pools in your area. Approval can take days or weeks.
- Mix sources while approvals come in: broker power only on the boards, shipper drop and hook, and pool loads.
- Plan by yard. Know where trailers sit, how fast each yard checks you in, and where the next load is likely to come from.
Power only vs pulling your own trailer
With your own van, you can take any van load on the board, and you control the trailer's condition. With power only, you take the freight the programs near you have ready, and the trailer's condition is partly someone else's doing. In return, you skip the trailer payment and most dock waits, and a good program can keep a truck moving with short, predictable runs. Many carriers run both: their own trailer for some lanes and power only to fill gaps or reposition. The numbers side of that choice is in our power only vs owning trailers cost comparison.
Risks to manage
- Trailer damage: you're responsible for the trailer while you have it. Photograph every side at hook and at drop.
- Yard waits: drop and hook is faster than live loading, but slow gate check-ins still burn hours.
- Program dependence: if one program slows down, your truck sits. Keep at least two sources of freight.
- Seal and paperwork mismatches: check the seal number against the bill of lading before you leave.
Power only isn't a shortcut, but for the right lanes it's one of the most efficient ways to run a tractor. Done well, you spend more time moving and less time waiting at docks.
Questions carriers ask
01What does power only mean in trucking?
It means the carrier provides the power, a tractor and a driver, but not the trailer. The trailer belongs to the shipper, a broker program or another carrier, and is often loaded before you arrive. You're paid to move it from one place to another.
02Do you need a CDL for power only?
Yes for a tractor-trailer. A loaded semi-trailer combination at 26,001 lb or more with a trailer rated over 10,000 lb needs a Class A CDL, so power only drivers are CDL drivers and fall under drug and alcohol testing.
03Is power only good for new carriers?
It can be, because there's no trailer to buy, but many programs want some operating history and clean inspections before approving you. Start applying early and mix broker power only loads in while program approvals come through.
04Who pays for trailer damage in power only?
Usually the carrier who has the trailer when the damage happens, under the trailer interchange agreement. That's why photos at every hook and trailer interchange insurance matter.