Power Only Trucking for Heavy Equipment: A Shipper's Guide

What Is Power Only Trucking?

In a power only arrangement, the trucking company provides a tractor (the "power unit") and a qualified driver — but no trailer. The trailer is supplied by the shipper, a dealer, a rental company, or a third-party logistics provider. The carrier simply hooks up to the existing trailer and moves it to the destination.

This model is common in several heavy equipment scenarios:

• Equipment dealers who own their own lowboys or RGNs and need drivers to move them between locations
• Construction contractors who own trailers but don't have enough tractors or drivers for a specific move
• Rental companies repositioning trailers between yards
• Auction logistics companies that stage trailers at auction yards for multi-unit pickup

When Power Only Makes Sense for Heavy Equipment

You Own the Right Trailer

Power only is most cost-effective when you already own a trailer that's properly spec'd for the load. If you own a 5-axle RGN rated for 80,000 lbs, you don't need to pay a carrier's trailer cost — you just need the tractor and driver. This can reduce transport costs by 15–30% compared to a full-service carrier providing both tractor and trailer.

Trailer Repositioning

Equipment dealers and rental companies frequently need to reposition empty trailers between locations. Power only is the standard solution — a carrier hooks up to the empty trailer and moves it to where it's needed, often as a backhaul on a return trip, which keeps costs low.

Drop-and-Hook Operations

For high-volume shippers with multiple trailers in rotation, power only enables drop-and-hook operations: a driver drops a loaded trailer at the destination and immediately picks up an empty or pre-loaded trailer for the return trip. This maximizes driver utilization and minimizes wait time.

Trailer Compatibility Requirements

Not all trailers are compatible with all tractors. Before booking power only service, confirm:

• Fifth wheel height: The tractor's fifth wheel must be compatible with the trailer's kingpin height. Lowboys and RGNs have specific kingpin height requirements that differ from standard flatbeds.
• Air line connections: The trailer's air brake connections must be compatible with the tractor's glad hands. Older trailers may have non-standard connections.
• Electrical connections: The trailer's lighting and ABS connections must be compatible with the tractor's electrical system.
• Axle configuration: Multi-axle lowboys and RGNs require tractors with sufficient horsepower and torque to handle the combined weight. A standard 450 HP tractor may not be adequate for a 7-axle RGN loaded to 150,000 lbs.
• Permit status: If the trailer is already permitted for a specific route, the tractor must match the permit's specifications. Changing tractors may require permit amendments.

Regulatory Considerations for Power Only Heavy Haul

Power only arrangements for heavy equipment trailers carry the same regulatory requirements as full-service heavy haul:

• Oversize/overweight permits: Required for any load exceeding federal thresholds, regardless of who owns the trailer. The carrier is responsible for ensuring permits are in place before moving.
• Driver qualifications: Drivers must hold a valid CDL with appropriate endorsements for the trailer type and load. Oversize load experience is essential for lowboy and RGN moves.
• Insurance: The carrier's liability insurance must cover the trailer and cargo. Confirm coverage limits before booking — standard cargo insurance may not cover the full value of heavy equipment.
• Hours of Service (HOS): Federal HOS regulations apply to power only drivers the same as any other commercial driver. Plan transit times accordingly.

Cost Advantages of Power Only

For shippers who own their trailers, power only can offer significant cost savings:

• No trailer rental cost: Full-service carriers include trailer cost in their rate. If you own the trailer, you eliminate this component.
• Backhaul pricing: Carriers often offer reduced rates for power only moves that align with their existing routes, particularly for empty trailer repositioning.
• Trailer utilization: Owning trailers and using power only service allows you to keep trailers staged at job sites or auction yards without tying up a full tractor-trailer combination.

Typical power only rates for heavy haul trailers run $1.50 to $3.50 per mile depending on trailer type, route, and market conditions — compared to $2.50–$5.50 per mile for full-service heavy haul.

Finding Reliable Power Only Carriers

Not all carriers offer power only service for specialized heavy haul trailers. Key qualifications to look for:

• Experience with lowboy, RGN, and step deck trailers (not just dry van power only)
• Drivers with oversize load experience and appropriate CDL endorsements
• Adequate insurance coverage for heavy equipment cargo
• Permit procurement capability for oversize/overweight loads
• Real-time load tracking and communication

IronHaul Logistics provides power only service for heavy equipment trailers — lowboys, RGNs, step decks, and flatbeds. We have experienced drivers, full permit procurement capability, and adequate insurance for high-value equipment loads. Get a quote at ironhaullogistics.com, call (208) 495-2260, or email [email protected].