SONAR Launches Accepted Truckload Volume Index to Measure Actual Moving Freight

The Analysis

FreightWaves SONAR put out a new index this week, and if your first reaction is another dashboard toy, I get it. But before you scroll past, sit with one number that should already keep you up at night: the gap between what you tender to carriers and what they actually take. That gap is where your real truckload cost lives.

The index is called ASTVI, the Accepted SONAR Truckload Volume Index, and the trick is simple, it throws away the loads carriers rejected and counts only the ones that moved. Cleaner picture, sure. But here is the part nobody in the press release will say out loud: that cleaner picture is also a negotiation clock for anyone who buys freight. I am going to show you the buyer's side of this number, because that is the only side that pays.

Start with the facts, sliced as thin as the tool itself. On 16 June 2026, FreightWaves SONAR launched the Accepted SONAR Truckload Volume Index, ASTVI. Two mechanical details carry the whole weight and everything else is packaging. the index strips out rejected tenders and counts only the loads carriers actually accepted, reported at national, regional, and market levels and refreshed every single day. it carries week-over-week, month-over-month, and year-over-year change metrics, and it splits total accepted volume into dry van and reefer segments. The pitch is a cleaner read on what freight is genuinely moving through the market, handed to brokers, carriers, shippers, and analysts without anyone doing the subtraction by hand. On paper this is a tidy visibility upgrade, and almost every outlet that covered it stopped there, called it a transparency win, and moved on to the next press release.

Now ask why a tool like this arrives in mid-2026 and not three years earlier, because the timing tells you more than the feature list. The tendered-versus-accepted gap only becomes worth measuring when it is wide, and it is widest precisely when the market is soft. When capacity is loose, shippers flood their routing guides with tenders, carriers pick the lanes they like, and routing-guide compliance quietly slips below where the contract promised it would hold. The spread between what was offered and what was accepted yawns open. In a tight market the opposite happens: carriers take almost everything that is offered, the gap flattens to nothing, and nobody needs a dedicated index to tell them capacity is scarce.

So ASTVI is not a neutral weather report. It is a gauge tuned for exactly the climate we are sitting in, a buyer's market where carriers are still selective enough to say no. The upstream push is structural too. Freight-data vendors stopped competing on who holds the biggest dataset and started competing on who sells the sharper signal, and accepted volume is a cleaner read on real demand than tendered volume, which is mostly hedging noise from shippers spreading the same bet across six carriers. This instrument was calibrated for one season, and treating it as an all-weather dial is the first mistake a buyer will make with it.

Slice the impact by where you sit, because the same number means opposite things to different players, and only one of those players pays the freight bill. Carriers feel the shift first, since their own accept-or-reject decisions are the raw material the index is built from. Brokers take that same number, wrap it as a routing-efficiency read, and resell it to shippers who do not want to do the math. But the side this column is written for, the importer and exporter who actually signs the rate confirmation, gets the asymmetric end of this, and that asymmetry is the entire ballgame. A shipper whose tenders get accepted ninety-five percent of the time barely changes a habit.

A shipper whose routing-guide compliance has slid to seventy percent lives in a different building: roughly one in three tenders bounces straight back, and that bounce never appears in any tenders-sent report, because tenders sent count intention, not trailers that actually rolled. Put hard ranges on it so it is not hand-waving. A large shipper with annual-volume leverage and a signed contract can hold acceptance between eighty-five and ninety-five percent even in a soft cycle, because carriers protect the accounts that fill their tractors. A small shipper living in the spot market, with thin bargaining weight and no committed volume, can drop to sixty to seventy-five percent the moment carriers start cherry-picking lanes.

Those rejected loads are not rounding errors you can silently absorb. They are a re-tender tax, paid in delayed hours and premium backup capacity, and the smaller you are, the harder it bites, because you have no other chip to slide that cost onto. A Fortune 500 importer gets a lane rejected, shrugs, and reroutes internally. A ten-person exporter eats a missed delivery and an angry customer who may not order again. The index is one number to the market and a painfully personal percentage on your desk, and the percentage is what should keep you awake, not the national line.

Understand what a rejection actually is from the carrier's seat, because guessing wrong here costs you real money. A tender gets declined for three reasons and none of them are personal. The lane is unprofitable at the rate you offered once fuel and empty-mile cost are counted. The carrier has no driver or no trailer positioned to cover it without a deadhead that blows the margin. Or the load arrives at a moment the carrier is already at capacity on that corridor and protecting service to its committed accounts. All three are signals a buyer can trade on.

A rejection concentrated on your lowest-rate lanes tells you those lanes were never properly priced, and the fix is a rate correction, not a new carrier. A rejection concentrated at month-end or quarter-end tells you the carrier is protecting committed volume and you are the swing, which means you should either become committed somewhere or accept swing pricing. Reading the pattern of your own rejections is a cheaper consultant than any index, because it is your own freight telling you exactly where you are weak.

Trace how long the rejection takes to reach your cost and your promise to the consignee, because the lag is where buyers get blindsided. The bounce itself is instant, a clean rejection sitting in the system the moment you tender. But the money and the delay arrive with a delay of their own. A rejected load gets re-tendered, a backup carrier quotes you a premium because you are now urgent rather than planned, and your pickup date slides a day or two down the calendar.

In a soft market that premium may be small, a few points on rate, but the delay is real, and it compounds week after week across a run of failed tenders. Draw the timeline so it is concrete. Day zero, you tender, rejected within the hour. Day one to two, you re-tender and rebook at a worse rate than the one you thought you had locked. Week one to two, the pattern surfaces in your own acceptance ratio and starts nudging your realized lane cost upward.

Quarter one to two, if the spread keeps widening, carriers walk into contract renewals holding the leverage and your rate card moves against you. The early-warning window is the spread between tendered and accepted widening faster than your own ratio does. You get roughly one to two weeks of lead before your own acceptance slips, but only if you are watching the market series and not just the four walls of your own system.

Use the market-level series, not the national one, because your freight does not move on a national average. ASTVI is published at national, regional, and market levels, and the market cut is the only one that maps to your lanes. A national accepted-volume number can look calm while your specific corridor is already tightening, and a buyer who watches only the headline will be the last to feel the pinch. Pull the three market series that bracket your highest-volume lanes and track them weekly; the early warning lives in the gap between your lane's market and your own acceptance ratio, not in the country-wide line. The national number is for journalists. The market number is for the person who signs the rate confirmation, and that person is you.

Here is the part the headlines missed, and it is the only part that should change what you do on Monday morning. Every outlet framed ASTVI as a transparency gift, a way to finally see true demand. That framing is a trap for anyone who buys freight. The number is not a demand gauge you admire from a distance. It is a pricing-power meter you are meant to trade against. The moment accepted volume tightens relative to tendered, carriers stop needing your business quite as much, and that is the exact moment your negotiating leverage peaks and begins to fall.

So the unspoken instruction buried inside this launch is simple: when the spread is still wide and your own acceptance is still healthy, that is your last clean window to lock multi-year truckload contracts at soft-market rates, before carriers close the gate and walk rates up at renewal. Miss that window and you sign into a hardening market with no exit for twelve months. The second half of the missed point is private and more useful. Your own tender-acceptance ratio is the most honest demand thermometer you own, more honest than any order forecast your planning team hands you, because it is what carriers vote with their capacity when nobody is watching.

If your ratio is slipping while ASTVI's national number still looks calm, you are losing share of carrier capacity on your specific lanes, and no macro index will ever warn you about that, only your own records will. The media sold you a viewing lens. What you actually received is a clock counting down on your next freight contract.

Push the other direction and see where the conclusion flips, because a number this relative is worthless without its boundary conditions. If carriers were accepting everything offered to them, ASTVI would be a vanity metric, identical to tendered volume and carrying zero extra information. Its entire value depends on a soft enough market that rejections happen in the first place, which means the tool is most useful exactly when it is easiest to mistake for background noise. The practical danger is the opposite misread. A rise in accepted volume reads, at a glance, like demand recovery, and a buyer ramps orders to chase it, only to get burned twice over, once on inventory they never needed and once on freight rates that climb behind their back as capacity tightens.

The condition that flips the advice is clear: if your own acceptance ratio is rising and the spread is narrowing, carriers are hungry, and you should be squeezing for rate concessions and shorter commitments rather than locking long. The index does not tell you which way to jump on its own. Your position inside the funnel does. Read it always as a relative signal against your own baseline, never as an absolute one, or it will lie to you precisely when you most want the truth.

Run the math on your own lane so this stays concrete instead of a dinner-party opinion. Assume you run forty truckload moves a week on your highest-volume lane, and your routing-guide acceptance has been running ninety percent, which means four loads a week bounce back. At a soft-market re-tender premium of, say, three percent on rate plus a one-day delay penalty you internally value at fifty dollars per load in expedite and overtime, that is four loads times the premium plus two hundred dollars in delays, call it three hundred to four hundred dollars a week of friction you have been quietly booking as normal.

Now suppose the ASTVI spread on that lane widens five points and your acceptance drops to eighty percent, so eight loads bounce. Your weekly friction roughly doubles, and the premium creeps higher as carriers feel less pressure to take your freight at the old number. The crossover where this stops being rounding error and starts eating margin is right around an eighty-five percent acceptance line. Below that, the re-tender tax compounds faster than any volume discount you negotiated can offset. That is the threshold I would pin to the dashboard, not the national accepted-volume figure that the press release wants you to admire.

Tie this back to the only number your finance chief cares about, which is landed cost, because a truckload index is easy to file under transportation trivia until you remember that domestic dray and line-haul sit in the same cost structure as your overseas ocean and your tariffs. When carrier acceptance tightens, the re-tender tax does not stay in a transportation silo. It leaks into unit economics, into the safety-stock days you have to carry to absorb the delays, and into the discount you end up offering the customer to keep the delivery promise you missed.

I have watched a three-point acceptance slip turn into a half-point hit on gross margin after the inventory and expedite math settled, and nobody in the building had connected the two, because the freight desk and the procurement desk do not share one dashboard. This index, used privately, is the bridge between those two desks. If your acceptance is degrading on the lanes that feed your highest-velocity products, that is an early signal to pre-build inventory or to dual-source the component before the margin conversation even starts.

Turn the index into a procurement instrument rather than a reading habit. Most buyers run their truckload bidding on a calendar that ignores the market, then wonder why they signed at the top. The ASTVI spread is a free, daily vote on whether carriers are gaining or losing the upper hand, and you should be using it to time the opening of your bid, not to explain the outcome after. Wide spread, your ratio still healthy, carriers still selective: that is the soft market, and it is your window to commit length and defendable volume. Narrowing spread, your ratio climbing, carriers hunting freight: that is your window to shorten the commitment and push for concessions, because locking long into a softening market is the classic way to overpay for two years. The buyers I respect treat the freight market like a negotiation they control the timing of, not weather they endure. This index will not sign for you, but it will tell you whose hand the pen is in.

Pay attention to the dry van and reefer split the index publishes, because those are not the same negotiation. Dry van is the commodity lane where capacity swings widest and rejection risk is highest, so that is where your acceptance ratio moves first and where the early warning is loudest. Reefer is a tighter, more specialized capacity pool with fewer carriers and less slack, so when reefer acceptance slips, you do not have a cheap backup to fall back on, and the premium to recover a rejected load is brutal. If any of your highest-velocity products move in reefer, treat an acceptance dip there as a red flag on service continuity, not just cost, because a rejected reefer load is a load of perishables with a clock on it. The index splits the two for a reason, and the buyer who reads only the total misses the lane that will actually break first.

So what do you actually change, and I will keep this short because the analysis is the part that pays. The reflex to simply monitor the index is useless without a trigger bolted to it. Pull your own last eight weeks of tender and accepted load records and compute your acceptance ratio per lane; the line to act on is any lane dropping below eighty-five percent, because that is where re-tender cost starts eating margin you cannot recover anywhere else. Log the ASTVI national series and your top three regional market series weekly and watch the accepted-versus-tendered spread; treat a widening of more than five points within four weeks as your one-to-two-week early warning before your own acceptance slips.

Pre-negotiate backup capacity with a second carrier or broker on your five highest-volume lanes now, while the market is still soft, so a rejection becomes a one-day rebook instead of a two-day scramble at a premium rate. Set a standing alert that fires when your weekly acceptance ratio falls three points below your eight-week baseline, and make that alert trigger a rate check on backup capacity before you tender the next wave. Stop reporting tenders-sent as a demand signal inside your own team; report accepted volume and your acceptance ratio, because only those two describe freight that actually moved from dock to dock.

Reconcile your ratio against the ASTVI market spread every month and write down the lag you observe, because most shippers trail the market by seven to fourteen days and that lag is the planning buffer you should be protecting. And keep a separate watch on accessorial and surcharge lines, so a calm accepted-volume number cannot hide a cost shock carriers chose to deliver through the invoice instead of through the rejection queue. The tool is free to look at. The window it is quietly measuring is not.

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— By Grace Yang