Executive Summary In the week of October 6–12, 2026, SONAR’s national tender rejection index (STRI.USA) averaged 13.78%, about 2.5 times the 5.48% recorded in the same week of 2025. SONAR’s van contract rate index (VCRPM1.USA) was $2.73 per mile, up 18.2% year over year (as of September 30 readings). Tender volume rose about 8% while rejections rose about 150%. SONAR reads that pattern as capacity selectivity rather than a demand surge: carriers are choosing where to commit capacity. SONAR’s Partner of Choice sitrep, summarized publicly on October 20, 2026, argues that this makes a distinction between Shipper of Choice (a shipper carriers prefer to haul for, decided load by load) and Partner of Choice (a shipper carriers invest in, decided in planning meetings where drivers, trailers, and dedicated fleets are allocated). This analysis reviews the market data, the framework, the five attributes SONAR names, and what the framework implies for freight procurement. It draws on SONAR’s public summary of a paid report; the report’s detailed content is not reproduced here.

Partner of Choice: What SONAR’s Framework Says About Carrier Investment in Shippers

1 · The Market Data: Capacity Selectivity

The Three Indicators

SONAR’s data for the week of October 6–12, 2026, as published in its public summary:

Source: SONAR public summary, October 20, 2026. VCRPM1 values are as of September 30 of each year, the latest published reading.

Volume is up about 8% while rejections are up about 150%. If demand alone were driving the tightness, volume and rejections would be expected to rise together at similar rates; SONAR interprets the gap as carriers being selective about which freight they commit capacity to.

The Segmentation Beneath the National Rate

The national figure conceals wide variation:

Origin markets such as Quincy, Illinois (48.38%) and Cedar Rapids, Iowa (38.46%) were far tighter than inbound-heavy markets such as Lakeland, Florida (3.25%) and Phoenix (3.55%). The lane-level picture matters more than the national average.

Context: Where This Sits in 2026

Rejections have been elevated through 2026. They peaked at 17.55% in June, the highest level since 2022, when truckload spot rates also reached a reported record of $3.83 per mile. By early October, one weekly market update (October 5, 2026) put national rejections near 13.8%, below the summer peak, with the National Truckload Index around $3.55 per mile. In other words, the market is tighter than a year ago but not at its June extreme.

What Is Reported as Driving the Tightness

Industry analysts describe a supply-driven reset rather than a demand-led rebound. Reports attribute it to federal enforcement actions affecting driver licensing and training, including the closure of more than 550 CDL training schools, which analysts estimate has removed roughly 40,000 trucks from service since June 2025, along with carrier exits and elevated diesel costs earlier in the year. Diesel has since fallen from its spring peak. These are analyst estimates and press reports rather than official counts.

⚠️ Critical Takeaway: The data point to a market in which capacity exists but carriers are choosing where to commit it. How long that persists will depend on supply conditions and demand, neither of which this analysis forecasts.

2 · Shipper of Choice vs. Partner of Choice

What Shipper of Choice Covers

SONAR describes shipper of choice as the foundation: efficient facilities, short dwell, predictable tenders, and fair payment are the price of entry. In SONAR’s words, as quoted in its public summary: “No carrier invests in a customer whose dock consumes driver hours.” Shipper of choice is decided load by load on the dispatch board.

What Partner of Choice Adds

Partner of choice, in SONAR’s framing, is a strategic decision made in carrier planning meetings, where drivers, trailers, and dedicated fleets are allocated. It is a relationship in which both sides invest in each other’s networks, not just transact on loads.

Source: SONAR’s public summary of its Partner of Choice sitrep, October 20, 2026

SONAR presents the relationship as a maturity curve: transactional (carriers accept freight when convenient and price for churn), shipper of choice (carriers protect the freight in tight markets), and partner of choice (carriers commit assets, bring ideas unprompted, and flag issues early). The report argues the decisive shift is when the carrier stops simply servicing a shipper’s network and starts helping shape it.

⚠️ Critical Takeaway: In SONAR’s framework, shipper of choice is a preference decision, and partner of choice is an asset-allocation decision. Whether carriers in practice make such distinctions in their planning will vary by carrier and lane.

3 · The Five Attributes SONAR Names

SONAR’s sitrep identifies five attributes that define a partner of choice: transparency, commitment, network fit, mutual problem solving, and shared value. The public summary names them but does not describe each in detail; the full definitions sit in the paid report. The one attribute the public summary elaborates is network fit.

Network Fit: The Attribute With Public Detail

SONAR describes network fit as an underused lever. A shipper with outbound freight in markets where carriers are inbound-heavy offers something carriers value: freight that helps them reposition trucks. The public summary gives examples such as Lakeland, Florida and Phoenix, and notes that a shipper can commit consistent volume on those easier lanes in exchange for priority on harder lanes. The logic is that balanced lanes reduce empty miles for the carrier, which may be worth more to the carrier than a marginal rate difference.

The Other Four

For the remaining four attributes, general discussion in the freight industry—not SONAR’s own wording—suggests the following themes, offered here as context rather than as the content of the sitrep:

• Transparency is often associated with sharing volume forecasts and lane information so carriers can plan asset commitments.
• Commitment is often associated with volume commitments that carriers can rely on across a cycle.
• Mutual problem solving is often associated with treating operational friction as a shared process issue.
• Shared value is often associated with relationships that work economically for both sides across the cycle.

⚠️ Critical Takeaway: Only the names of four of the five attributes, and the network-fit example, are described in the public summary. Readers who want the detailed definitions should consult the SONAR report directly.

4 · The Both-Ways Obligation

SONAR also states that partnership runs both ways: carriers that ask shippers for long-term commitments owe them capacity, early warnings, market insight, and fair pricing across the cycle. In practical terms, this means a shipper evaluating whether a relationship is a partnership can look at what the carrier offers in return for commitment.

⚠️ Critical Takeaway: In SONAR’s framing, partner of choice is a two-way standard: expectations of shippers are paired with expectations of carriers.

5 · Timing and the 2027 Bid Season

SONAR notes that its sitrep arrives as carriers decide which customers justify long-term commitments ahead of the 2027 bid season, and states that contract repricing is largely done while partner-of-choice positions are still being set. That is SONAR’s assessment; it is not a documented industry timetable, and the extent to which carriers settle such positions before bids varies.

SONAR’s sitrep builds on its June 2026 Shipper of Choice report. It also asks why earlier partnership pushes, in 2018 and in 2020–2022, faded, and what may be different this cycle. The public summary does not give SONAR’s answers.

⚠️ Critical Takeaway: The timing claim is SONAR’s view of how carrier planning works. Shippers may find it useful to check it against their own carriers’ planning cycles.

6 · Considerations for Freight Procurement

The framework raises several questions that shippers commonly look at in their own data. These are general considerations, not recommendations from SONAR:

The sitrep reportedly includes a six-question self-assessment and five practical actions; those are described in the paid report and are not reproduced here.

⚠️ Critical Takeaway: Procurement approaches that rely only on lane-by-lane rate comparison do not capture the relationship dimensions SONAR describes. Whether the partnership model produces better capacity outcomes in practice is something each shipper can assess against its own tender data.

7 · Conclusion: A Framework for a Selective Market

SONAR’s October 2026 data show tender rejections at about 2.5 times last year’s level and van contract rates up 18.2%, with volume up about 8%. SONAR reads this as a capacity-selectivity market and proposes that the relevant question for shippers is shifting from “are we attractive for this load?” to “are we a network a carrier wants to invest in?”

Key Takeaways

The Bottom Line

The data show a tighter market than a year ago, and SONAR’s framework offers one way to think about how shippers and carriers might structure relationships in it. The public evidence for the framework is SONAR’s own data and reasoning, published by a company that sells the tools and the report; it is a useful lens rather than an established industry standard.

The message is clear: SONAR’s Partner of Choice framework asks shippers to look beyond rate and load-level attractiveness to the network value they offer carriers, and the market data it cites show why the question is being asked in 2026.

This analysis reflects SONAR’s public summary of its Partner of Choice sitrep (October 20, 2026), which draws on SONAR indicators STRI.USA, VCRPM1.USA, and STVI.USA, plus press and market-update reporting on June 2026 spot rates and tender rejections and on federal enforcement affecting driver capacity. SONAR is a commercial data product, and the full sitrep is available to subscribers; this analysis does not reproduce it. Tender rejection rates, contract rates, and carrier behaviors are subject to market conditions and individual carrier relationships. Shippers should evaluate their own lane-level data and carrier relationships in light of the framework described.