// Field Brief · Week 17
BEHIND THE SHIELD
The national average for on-highway diesel fell to $5.40/gal as of April 20 — down $0.21 from the prior week. For shippers, that is a modest cost reprieve, but diesel remains $1.87/gal higher year-over-year, and fuel surcharge tables written before March 2026 are still materially underpriced for today’s cost environment.
Last week also felt easier on coverage — and that ease was legitimate. Two things happened simultaneously: carriers ran hard to bank miles ahead of CVSA Roadcheck Week, pushing more trucks onto available lanes; and load posts dipped slightly week-over-week, reducing the freight competing for those trucks. Both sides of the load-to-truck ratio moved in shippers’ favor at the same time. Rates softened, coverage opened up, and there was genuine room to negotiate.
The structural picture underneath has not changed. Spot load posts are still +68% year-over-year. Truck supply is still down 10% YoY. The tariff environment continues adding cost pressure: ATA estimates current import tariffs add up to $35,000 to the delivered price of a new Class 8 tractor, which means fleet replacement is stalling and the supply-side correction has no near-term relief valve. Shippers who used last week’s window to lock in capacity or re-negotiate rates are well-positioned. Those who read it as a trend are walking into the tightest 10-week stretch of the year without a cushion.
What looks like three separate seasonal events is one continuous tightening sequence with no meaningful relief between them. Catalyst 1 — CVSA Roadcheck Week (May 12–14): During Roadcheck, carriers park equipment or run lighter to minimize inspection risk. Available truck supply drops sharply on affected lanes. Rates firm immediately as shippers compete for fewer trucks. The pre-Roadcheck period we just passed saw carriers running hard to maximize revenue — that extra supply is about to come off the market.
ATA truck tonnage data for March posted its largest year-over-year gain in more than three years and its best quarterly result in nearly a decade. Covenant Logistics cited a tightening driver market and stronger demand as early signs of a truckload rebound already underway. Dry van spot rates pulled back slightly to approximately $2.39/mi on DAT's top 50 lanes following Easter softening, but the underlying demand signal — spot load posts up 68% YoY — points to a market that is using the spot board strategically, not just as a last resort.
Catalyst 2 — Memorial Day Surge (late May): Retail and CPG shippers flood the spot market in the two weeks before Memorial Day to cover holiday inventory. This demand surge hits before the post-Roadcheck truck supply has fully recovered. The load-to-truck ratio spikes from both sides simultaneously — more loads, fewer trucks.
Catalyst 3 — 4th of July Build-Up (June–July): Before the Memorial Day demand clears, the 4th of July inventory build begins. Arrive Logistics and DAT are both flagging this as the entry point into the 100 Days of Summer — the tightest sustained capacity window of the year.
ATA truck tonnage data for March posted its largest year-over-year gain in more than three years. Covenant Logistics cited a tightening driver market and stronger demand as early signs of a truckload rebound already underway. Dry van spot rates pulled back slightly to approximately $2.39/mi on DAT’s top 50 lanes — but spot load posts up 68% YoY signal a market using the spot board strategically, not as a last resort. The reefer segment is already at peak pressure: April reefer spot tracking toward $3.13/mi, load-to-truck ratio near 16.9 nationally — more than double year-ago levels. C.H. Robinson raised its 2026 dry van CPM forecast to +17% year-over-year.
