01
What you are actually buying
With an asset carrier the contract is with the company operating the trucks, trailers, drivers, dispatch and maintenance. With a broker there is another layer between you and the physical capacity: shipper, broker, motor carrier, truck.
02
Where asset carriers win
Contract adherence (MIT found asset primaries about 5× more likely to stay with contract-priced loads), chain of custody, a single accountable party when something goes wrong, and the ability to plan trailers and drivers around your volume.
03
Where brokers win
MIT FreightLab research found brokers were 2.3× more likely to accept shipments on historically volatile lanes and about 2× more likely to accept unexpected surge shipments. Network reach, one-off lanes and recovery freight are broker territory.
04
Double-brokering and security
A load posted to a public board can be re-brokered to a carrier you never vetted. For theft-sensitive freight, ask directly whether the load will ever be posted and who physically holds the seal record.
05
The practical answer
Place recurring, predictable lanes directly with an asset carrier. Keep brokerage capacity for the variable edge. Measure both on acceptance, on-time and total landed cost including fall-through.