Alabama Pauses Dyed-Diesel Enforcement, but Road-Use Rules Remain

Alabama adjusts enforcement as diesel costs climb

Alabama Governor Kay Ivey on September 24 directed the Alabama Law Enforcement Agency, or ALEA, to halt enforcement involving dyed diesel fuel for 120 days. The move is aimed at easing fuel-cost pressure on the state’s agricultural and timber communities during harvest season.

For truck drivers and fleets, the key point is what the announcement does **not** do: it is not a broad nationwide authorization to fuel ordinary highway trucks with dyed diesel. The governor’s action changes a state enforcement priority, while federal tax rules governing dyed fuel remain in place unless federal authorities separately provide relief.

That distinction matters because the latest U.S. Energy Information Administration diesel benchmark showed the national average price for on-highway diesel at $6.529 per gallon for the week ending September 21. That was up 24.4 cents from the prior week, after substantial increases earlier in September.

What Alabama announced

The governor directed ALEA to stop enforcing dyed-diesel violations for the next 120 days, effective immediately. Alabama said the step is intended to help agricultural and timber operators coping with sharply higher diesel costs at the start of the state’s peak harvest period.

Dyed diesel is fuel marked with red dye and generally sold for tax-exempt, non-road purposes. It is commonly used in equipment such as tractors, harvest machinery, generators and other off-highway machinery. Because it does not carry the same road-use tax treatment as clear on-highway diesel, its price can be lower.

The state also said the governor instructed the Alabama Department of Revenue commissioner to request dyed-diesel penalty relief from the Internal Revenue Service.

That request is important, but as of September 25, it is still a request. Alabama’s announcement did not say that the IRS had approved a federal waiver or that federal excise-tax requirements had been suspended.

Why highway carriers should be careful

A state decision to pause one agency’s enforcement activity is different from a change in the underlying fuel-tax rules. Owner-operators, company drivers, leased operators and fuel buyers should avoid treating the Alabama directive as a general permission slip for highway use of dyed fuel.

IRS guidance says dyed diesel generally may not be used for a taxable purpose, including use in a diesel-powered highway vehicle unless a specific exception or relief measure applies. The guidance lists potential penalties for improper dyed-fuel use as the greater of $1,000 or $10 per gallon, in addition to applicable tax.

The IRS also says a back-up tax generally applies when dyed diesel is delivered into the fuel supply tank of a diesel-powered highway vehicle for other than a nontaxable use. Under the current IRS publication, that tax is generally 24.4 cents per gallon.

In practical terms, a driver operating a registered road tractor on public highways should not assume that a temporary pause in Alabama enforcement eliminates exposure to federal tax consequences. It also does not automatically determine how another state, a tax authority, a shipper, a fuel supplier or a fleet’s own compliance policy will handle dyed fuel.

The operational difference matters

Fuel compliance can involve more than a roadside check. Carriers may need to consider:

• Federal excise-tax requirements.
• State fuel-tax rules and inspections.
• IFTA reporting and fuel-purchase documentation.
• Customer, shipper and insurance requirements.
• Internal fleet controls over bulk tanks and fuel cards.
• Whether a truck is used exclusively off road, on public roads, or in both settings.

This is particularly relevant for agricultural and timber businesses with mixed equipment. A business may operate tractors, loaders and harvest equipment off highway while also running registered log trucks, dump trucks or tractor-trailers on public roads. The fact that one piece of equipment has a legitimate off-road use does not automatically make dyed fuel appropriate for every vehicle in the operation.

Who may see the biggest immediate effect

The announcement is most directly relevant to Alabama farm and timber operations, including businesses that rely heavily on diesel during harvest, hauling and processing activity. Those sectors often have a combination of off-road equipment and road-going commercial vehicles, making clear fuel-management procedures especially important.

Independent truckers and small fleets serving those industries may also receive questions from customers about fuel practices or pricing. Carriers should be prepared to explain the difference between a state enforcement adjustment and a change in federal fuel-use rules.

Recruiters and staffing agencies working with agricultural, forestry, bulk-haul and seasonal transportation employers may also hear more demand-side pressure if high diesel costs affect operating schedules, equipment utilization or hauling volumes. But the state action itself does not change CDL, hours-of-service, drug-and-alcohol, registration or commercial insurance requirements.

What drivers and carriers should do now

Drivers do not need to become tax specialists, but they should know when to elevate a fuel question to dispatch, the owner or a compliance contact. A few practical steps can reduce confusion:

For drivers

• Use the fuel type specified by your carrier or equipment owner.
• Keep fuel receipts and follow company instructions for fuel-card purchases.
• Do not make assumptions based on a social-media post, a customer conversation or an informal instruction at a jobsite.
• If a truck is registered for highway operation, ask before using fuel from an off-road tank.
• Report unclear fuel-labeling, tank-marking or fueling instructions before leaving the location.

For carriers and owner-operators

• Review whether bulk tanks, invoices and dispensing equipment clearly distinguish dyed and clear diesel.
• Remind dispatchers, drivers and equipment managers that Alabama’s action is limited in scope and temporary.
• Maintain records separating off-road equipment fuel from fuel used by highway vehicles.
• Monitor any IRS response to Alabama’s request for penalty relief.
• Review fuel-surcharge policies and customer communications as diesel costs remain elevated.

For fleets operating across state lines, consistency is especially important. A truck that crosses the Alabama line may be subject to a different enforcement environment once it enters another state, while federal rules continue to apply regardless of route.

Fuel costs remain the broader issue

Alabama’s directive is a local response to a larger transportation-cost problem. The EIA benchmark for the week ending September 21 was $6.529 per gallon nationwide, compared with $5.967 two weeks earlier and $5.599 three weeks earlier.

For carriers, a rapid diesel increase can create a timing problem. Fuel costs rise immediately at the pump, while fuel surcharges, customer rate adjustments and contracted freight pricing may update on different schedules. The effect can be most acute for small fleets and owner-operators that buy retail fuel and have limited ability to reset rates quickly.

The move also highlights how fuel-cost pressure can affect freight beyond longhaul trucking. Agriculture, timber, construction and regional bulk-haul operations depend on both on-road trucks and off-road machinery. A diesel spike can raise costs throughout the chain, from field work and loading through processing and final delivery.

What to watch next

The next development to watch is whether the IRS grants any targeted relief in response to Alabama’s request. Until an official federal action is issued, the safer compliance assumption is that federal dyed-fuel restrictions and tax consequences remain in force.

Industry participants should also watch the next EIA weekly diesel release, scheduled for September 29. Another significant move in the national benchmark could affect fuel-surcharge tables, spot-market economics and operating decisions for carriers serving fuel-sensitive freight sectors.

For now, Alabama’s 120-day enforcement pause may provide limited state-level breathing room for the agricultural and timber communities it targets. But for highway trucking, the practical message is straightforward: verify the fuel, document the purchase and do not confuse a temporary Alabama enforcement policy with a broad change in road-fuel law.