DAT’s March Volume Jump Says Truckload Tightening Isn’t a Headline Anymore. It’s Operating Reality.

Truckload markets do not need another dramatic hot take. The data is already loud enough.

March gave shippers a cleaner message than the freight market has offered in a while: capacity is tightening, pricing power is shifting, and waiting for summer to get serious about procurement discipline is a bad idea.

According to DAT’s mid-April market update, the DAT Truckload Volume Index rose across all three major equipment types in March. Van TVI reached 253, up 12% from February. Reefer hit 196, up 7%. Flatbed climbed to 314, up 18%. That matters because it was not just one weird mode-specific spike. It was a broad move across the core truckload market.

The pricing data moved with it. DAT reported spot van rates rose 11 cents month over month to $2.52 per mile, reefer increased 9 cents to $2.97, and flatbed jumped 37 cents to $3.09. Contract pricing moved higher too, with contract van rates at $2.72 per mile, reefer at $3.10, and flatbed at $3.43.

That is not a market gently drifting off the bottom. That is a market regaining leverage.

March was broad, not isolated

One of the easiest mistakes in truckload planning is to treat every rate uptick as temporary noise. Sometimes that is fair. This time, it looks lazy.

The March volume gains were spread across van, reefer, and flatbed, which suggests a wider freight demand pulse tied to retail replenishment, produce season, construction activity, and industrial freight. Flatbed was the most obvious stress point, but dry van and reefer also moved enough to kill the idea that capacity remains comfortably loose everywhere.

A separate FreightWaves analysis reinforces that view from another angle. FreightWaves reported that flatbed tender rejection rates frequently topped 40% in March, while the SONAR Flatbed Truckload Volume Index, adjusted for rejections, averaged 22% above March 2025 levels. It also noted that broker-posted loads reached their highest level since June 2022 and ran 26% above the same week a year earlier.

That kind of combination matters. Volume is up, rejection behavior is tightening, and spot activity is becoming more expensive to secure. None of that screams “buyers’ market.”

Fuel lit the fuse, but that is not the whole story

Yes, diesel was a big part of the March rate move. Pretending otherwise would be stupid.

DAT said average fuel surcharges surged across all equipment types, with the van fuel surcharge rising from 41 cents to 61 cents per mile, the reefer surcharge climbing to 67 cents, and the flatbed surcharge reaching 73 cents. Ken Adamo, DAT’s chief of analytics, noted that the March van surcharge was roughly 50% above the 2025 baseline.

But shippers should not hide behind the fuel explanation, because that misses the bigger operating problem.

When fuel spikes hit a market that still has plenty of slack, carriers do not necessarily gain much leverage beyond surcharge recovery. In March, though, the underlying market was already getting tighter. That is why the all-in rate move matters. Diesel did not create strength from nothing. It amplified a market that had less room for error than many routing guides assumed.

Transport Topics made the same point in plainer terms. Its April coverage of the DAT report said the market is dealing with both fuel shock and a more constrained supply backdrop, with carriers holding firmer pricing power and shippers running into routing-guide compliance issues as rates move up.

That is the part transportation teams should actually care about.

Routing guide discipline is about to separate adults from amateurs

Loose markets forgive bad freight habits. Tightening markets punish them fast.

When capacity firms up, shippers with weak routing-guide discipline get exposed first. Primary awards miss. Backups reject more often. Mini-bids start multiplying. Procurement teams blame operations, operations blame carriers, and the spot market gets treated like a safety blanket even while it becomes more expensive by the week.

If March was the warning shot, the playbook for the next few months is obvious:

• clean up carrier commitments on high-volume lanes
• identify freight that routinely falls through the routing guide
• isolate facilities and regions with chronic tender leakage
• review reefer and flatbed exposure before produce and summer construction pressure peak
• stop assuming last year’s contract assumptions still buy the same compliance

This is especially important for flatbed-heavy and industrial shippers. FreightWaves reported SONAR’s National Truckload Index for dry van was pushing above $3.10 per mile, the strongest level since March 2022, while flatbed spot readings were even stronger. If your network touches machinery, building products, metals, or project freight, the margin for lazy planning just got smaller.

Contract strategy needs to get sharper now

The most useful takeaway from the March DAT report is not “spot rates went up.” Everyone can see that. The more important takeaway is that procurement timing matters again.

For the last couple of years, many shippers got used to waiting. Waiting to rebid. Waiting to challenge incumbents. Waiting to fix lane-level underperformance because the market usually bailed them out. That habit gets expensive when contract carriers begin pricing for where the market is heading instead of where it was sitting two quarters ago.

DAT explicitly framed the current moment as an RFP-season issue. The smart move is not blindly locking in everything at any price. It is being honest about market direction, building flexibility into awards, and tightening governance around the freight most likely to blow through contract assumptions.

That means transportation leaders should be asking better questions right now:

• Which lanes need earlier renegotiation before summer volatility spreads?
• Where is procurement relying on low compliance as a normal operating condition?
• Which carriers still have room to grow with us, and which are already signaling tighter selectivity?
• Are fuel, seasonality, and facility performance being modeled together, or in separate spreadsheets that never meet?

Shippers that answer those questions in April will look smart in June. The ones that wait for more confirmation will just pay tuition.

The real lesson from March

DAT’s March volume jump matters because it confirmed something the market has been hinting at for months: truckload conditions are no longer merely “stabilizing.” They are tightening in ways that affect execution, not just commentary.

Broader freight demand, rising fuel costs, firmer carrier behavior, and increasing routing-guide friction are combining into a market that is less forgiving than it was in 2025. The exact pace of tightening will still vary by mode and lane, but the operating posture for shippers should already be changing.

This is not the moment for panic. It is the moment for sharper lane strategy, cleaner procurement discipline, and fewer fantasies about endless cheap capacity.

If your team needs tighter routing-guide control, cleaner carrier execution data, and a better way to manage truckload procurement before volatility gets uglier, book a CXTMS demo and see how CXTMS helps transportation teams stay ahead of the market instead of reacting to it.