Where Trucking Capacity Sits Right Now, And What The Fleet-Size Split Might Be Signaling

The story of trucking capacity in the current market is complicated, as it depends on the size of the carrier involved. The national fleet consists of various groups, including owner-operators, mid-sized fleets, and the largest carriers, each in a different stage of performance heading into year-end. A single top-line number fails to capture the nuances, as each segment of the fleet is experiencing different dynamics.

Examining the fleet size breakdown reveals gaps that signify the real capacity story. The number of tractors in the smallest carrier segment (one to six power units) peaked near 398,000 in early 2023 but has since declined to 362,033, erasing the pandemic-era surge over three and a half years. This group, most exposed to the spot market with the least cost advantage, has seen 36,000 tractors, or nine percent of the segment, pulled back.

Mid-sized fleets (20 to 100 power units) have shown a different trend, climbing steadily to a record 470,402 tractors, up about half a percent from the latest monthly reading. This segment, better equipped to absorb capacity fluctuations, has only grown over the past five years, reaching a new high.

The largest carriers (1,000 or more power units) have a different story altogether. Their tractor counts fell 2.23 percent in the latest reading to 440,430, below their 12-month average. The biggest carriers are running lean, suggesting a disciplined approach to trimming underutilized tractors and right-sizing their fleets. Overall, the distribution of capacity by fleet size paints a more accurate picture of the current market conditions, with the smallest carriers seeing a significant decline and mid-sized fleets setting records, while the largest carriers are holding their counts lean.