Power only trucking: how it works, when it pays, and what to check before you hook up
Steve Woods · Lead Dispatcher, TruckSprint
Steve Woods leads the TruckSprint dispatch desk and reviews every guide we publish. How we research and update guides.
Updated October 2026
Quick answer
Power only trucking means you bring the tractor and driver, and someone else provides the trailer. You hook to a trailer at a yard or dock, deliver it and drop it. You skip the trailer's payment, maintenance and insurance, but power only loads may pay less per mile, and you're still responsible for inspecting the trailer and carrying trailer interchange coverage.
Power only is one of the simplest ways to start hauling with a tractor alone, and one of the easiest to get wrong if you treat someone else's trailer as someone else's problem. I'm Steve, lead dispatcher at TruckSprint. Power only is one of the eleven equipment lines we dispatch. Here's how it works, when it pays, and what to check every time you hook up.
How power only works
- The trailer owner has freight: a shipper with its own trailer pool, a broker with trailers staged at customers, a leasing company, or a program like Amazon Relay.
- You book the load and get the pickup yard, trailer number and seal details.
- You hook and inspect. Check the trailer, the paperwork and the seal.
- You deliver and drop, often at a drop yard or a receiver's dock, then bobtail to the next trailer if one's waiting.
Because many power only loads are drop-and-hook, there's often less time waiting at docks, which helps your hours of service.
Who power only suits
| Power only is good when | It's harder when |
|---|---|
| You have a tractor but not a trailer | Your lanes have few trailer pools |
| You want to avoid trailer payments and upkeep | Rates are lower than with your own trailer |
| You like drop-and-hook schedules | Empty trailer repositioning adds deadhead |
| You're starting out with less capital | You depend on one program for most freight |
Own trailer or power only? Run your numbers
The question isn't which rate is higher. It's whether owning a trailer earns enough extra per mile to cover what the trailer costs you each month:
Power only or your own trailer? EXAMPLE values
- With your trailer, after trailer costs
- $18,650/mo
- Power only, after interchange
- $18,350/mo
Your own trailer leaves $300 more a month. At these miles, your trailer pays for itself only if it earns at least $0.117 more per loaded mile than power only.
Revenue minus trailer-related costs only; truck costs are the same either way. Enter your own rates: power only and trailer rates vary by lane and season.
In the example, the trailer costs $1,050 a month more than interchange coverage, so it pays for itself only if it earns about 12 cents more per loaded mile at 9,000 miles. Drop to 5,000 loaded miles and power only comes out ahead. Your answer depends on your lanes; use your own numbers.
Hooking up a trailer you don't own
The trailer isn't yours, but on the road it's part of your vehicle. Before driving, the driver must be satisfied the vehicle is in safe operating condition (49 CFR 396.13), and that includes the trailer.
Source: 49 CFR 396.13 and 396.17, eCFR · checked 2026-10
Every time you hook up:
- Periodic inspection proof. The trailer needs documentation of an inspection within the past 12 months on the vehicle (396.17(c)). Look for the decal or report. No proof, no hook.
- Lights, tires, brakes and air lines. Walk it like it's yours.
- Landing gear, kingpin and fifth wheel lock. Tug test before you pull out.
- Doors, seal and paperwork. Match the seal number to the bill of lading, and photograph it.
- Existing damage. Photograph every side and note damage on the paperwork before you leave. Otherwise, it's on you at drop.
- Load, if you can see it. If the trailer is loaded and you can open it, check for shifting. You can still be cited for an unsecured load (393.100).
Add the trailer checks to your pre-trip inspection checklist.
Insurance for power only
You still need primary liability and cargo coverage as with any load. Power only adds the trailer:
- Trailer interchange or non-owned trailer physical damage pays for damage to a trailer you're pulling but don't own. Brokers and programs set the required limit.
- Check the trailer value. A refrigerated trailer costs more to replace than a dry van; make sure your limit covers what you pull.
More on coverage and costs in commercial truck insurance.
Where power only freight comes from
- Broker trailer pools. Many large brokers stage trailers at shippers and need tractors to move them.
- Shipper drop-trailer programs, where a shipper keeps trailers at its docks.
- Amazon Relay, which says most of its loads are power only.
- Trailer leasing and rental companies moving trailers between locations.
- Load boards with a power only filter.
The more programs you're set up with, the less you depend on any one of them, and the easier it is to find a reload near your drop.
Mistakes we see
- Hooking without inspecting. The trailer's defects become your violations.
- Skipping damage photos. Pre-existing damage gets billed to whoever can't prove otherwise.
- Ignoring empty moves. Repositioning empty trailers is still deadhead; count it in the rate. See deadhead miles.
- Too little interchange coverage for the trailers you actually pull.
- One program, all the freight. A rule change or account issue can stop your week.
Power only lets a tractor earn without a trailer note. It pays best for carriers who treat every trailer like their own at hook-up, and their own rates like a business decision.