FMCSA Grants Fuel Haulers a 16-Hour Driving Day as Diesel Prices Post Their Steepest Run in Years

The Federal Motor Carrier Safety Administration has given drivers hauling gasoline and diesel fuel a wider driving window than almost any other segment of the trucking industry currently operates under. Administrator Derek D. Barrs signed a waiver on Sept. 16 permitting those drivers to drive up to 16 hours within any 24-hour period, effective immediately and running through Dec. 16 — a three-month stretch that covers the tail end of harvest season and the run-up to winter fuel demand.

The waiver does not touch the standard hours-of-service rule for the rest of trucking, which caps driving at 11 hours inside a 14-hour on-duty window with a 30-minute break required after eight hours. For eligible fuel carriers, that structure is set aside in favor of a single hard ceiling: no more than 16 hours of driving in 24, paired with a mandatory rest period of either 6 consecutive hours in a sleeper berth or 8 consecutive hours off duty. A driver moving between waiver operations and normal hours-of-service operations must take a 10-hour break once combined on-duty time passes 14 hours, which prevents the waiver from being stacked on top of a driver's ordinary schedule to manufacture even longer days.

FMCSA built in real guardrails. Motor carriers operating under a conditional safety rating cannot use the waiver at all, drivers under an out-of-service order are excluded, and every driver needs a valid commercial license with the correct endorsements and a copy of the waiver, physical or digital, in the cab. The agency's legal authority comes from Section 4007 of the Transportation Equity Act for the 21st Century together with 49 U.S.C. 31136(e) and 31315(a) — the standing statutory tool FMCSA reaches for when it wants to suspend hours-of-service requirements outside the more familiar regional emergency-declaration process.

FMCSA's own justification is broad rather than granular: the agency cites "global supply chain disruptions" and anticipated increases in fuel demand tied to late-summer and fall agricultural harvesting. It does not name a specific refinery outage, pipeline event or price level in the text of the waiver itself. But the timing lines up closely with a fuel market that has been moving fast. The U.S. Energy Information Administration's weekly on-highway diesel survey put the national average at $6.285 a gallon for the week ended Sept. 14, up from $5.967 the week before — a jump that hit every region EIA tracks, from $6.027 on the Gulf Coast to $7.250 on the West Coast.

Trade coverage has filled in more of the backdrop than the waiver document itself does. Overdrive reported that national diesel prices crossed $6 a gallon the week of Sept. 14 alongside diesel inventories at record lows for that time of year. Land Line Media, tracing the pressure further back, tied the run-up to the U.S.-Iran conflict that began in early 2026 and reported that American consumers had spent a cumulative $49 billion more on diesel as of Sept. 17 than they would have otherwise — a 74% increase since the conflict started — compounded by refineries running near full capacity heading into scheduled fall maintenance that will pull output down further just as the waiver window opens.

What It Means for Brokers and Shippers

The waiver only adds driving capacity for the narrow slice of the fleet that hauls gasoline and diesel — it does nothing directly for dry van, reefer or intermodal drayage capacity. But a forwarder or broker with exposure to fuel-dependent lanes should still be watching three things.

First, this is capacity relief aimed at keeping the fuel itself moving, not freight generally, which means it is a leading indicator of how tight FMCSA and the Department of Transportation believe the fuel supply chain actually is. A federal hours-of-service waiver is not the first tool an agency reaches for; it is typically a sign that inventories and delivery schedules are stressed enough that normal driving limits were becoming a bottleneck in their own right.

Second, the West Coast's $7.250 average — nearly a dollar above the national figure — is the number to track for any lane touching California, Oregon or Washington. Fuel surcharge tables built on national averages will understate real cost exposure there, and carriers running outdated FSC schedules are the ones absorbing that gap right now.

Third, watch the Dec. 16 expiration date itself. It lands in the middle of peak-season volume build, and if the harvest-driven demand spike and refinery maintenance schedule that FMCSA cited haven't eased by then, an extension — or a scramble when the waiver lapses — is the more likely outcome than a clean expiration. A broker vetting a fuel-hauling subcontractor for the next three months should also confirm that carrier's current safety rating before assuming the extended hours apply, since a conditional rating disqualifies it outright.