Generally, the phrase "power only" refers to systems where independent owner-operators or small fleets with motor carrier authority bring only a tractor, no trailer, to freight movement, usually contracted to a brokerage (sometimes affiliated with a larger carrier) or occasionally a shipper or forwarder entity. Answer these four questions to help contribute to coverage of the hauling "niche," which has seen a fair amount of growth as brokerages seek to increase drop-hook operations with their shippers given ongoing capacity-expansion constraints since the COVID-19 pandemic's onset.