General information only, last reviewed October 25, 2026. Full notice at the end of the page. A date on this page has passed. Check the current rule at the source before you rely on it. Dates to watch
Mobile fueling brings the fuel to the fleet. A truck rolls into the yard overnight and tops off every vehicle, so drivers start the day full and never lose time at a station. The service is easy to sell and harder to run: fire permits, certified meters, and night-route math decide whether it pays.
What it is
Mobile fueling is delivering fuel directly into vehicles and equipment where they sit: a trucking yard, a jobsite, a parking lot. A fuel truck comes to them and fills each unit, so nobody drives to a station. For fleets that park overnight, it is sometimes called wet hosing.
Who uses it
Fleets and operations where a trip to the station wastes time or is impractical: trucking yards, construction sites, delivery fleets, equipment rental. Off-road equipment adds a second draw, since excavators and generators burn dyed diesel, which most retail stations do not carry.
Why fleets like it
- Vehicles start each day already fueled.
- Drivers spend zero time at stations.
- Equipment stays on the job.
- Cleaner per-vehicle records and less off-route stopping.
Metered-to-the-unit delivery also cuts fuel theft: every gallon lands in a named vehicle with a ticket behind it.
What it takes to add it
Hauling and metering fuel is the easy part for a jobber. The hurdles sit in regulation:
- Fire code and permits. NFPA 30A added a chapter on on-demand mobile fueling in its 2018 edition, and the International Fire Code requires an operational permit before a truck wet-hoses on private property (section 105.5.18), though states and cities amend it. Fueling a customer's fleet at a controlled site falls under the IFC's separate fleet-fueling section (5706.5.4.5), but the permit conversation still starts at the local fire marshal's office.
- Certified meters. Selling through a truck meter is a commercial sale, so the meter must pass state weights and measures testing, and most states also require an NTEP Certificate of Conformance. Handbook 44 keeps a meter on the liquid it was calibrated and approved for, or one with the same general physical properties, until it is recalibrated and retested (section 3.31, UR.1.4).
- Drivers and insurance. Placarded loads require a CDL with the hazmat endorsement, and a truck with tanks totaling 1,000 gallons or more adds the tanker endorsement. FMCSA sets a $1 million liability floor for carriers hauling oil under 49 CFR 387.9, and customer contracts often demand more. Confirm current figures with your insurer and state.
The night-route math
The economics live in gallons per labor hour. A bobtail can drop 2,800 gallons into one bulk tank in a single stop. A wet-hose driver topping off 35 trucks at 60 gallons each delivers 2,100 gallons across an entire shift, with a hose pull and a meter ticket for every unit. Same truck, same driver, fewer gallons. Route density decides whether the night pays, so providers cluster customers and fuel them in sequence.
The paperwork scales the same way: 35 tickets a night per truck, each with its own vehicle, gallons, and tax treatment. FastDragon Fleet turns those tickets into per-unit billing, dispatch records, and tax filings in one flow.
Quick answers
Can a mobile fueling truck fill vehicles inside a parking garage?
Usually not. The International Fire Code bars on-demand mobile fueling on public streets, inside buildings and on parking structure roofs (section 5707.4). NFPA 30A has allowed it in some open parking garages since its 2024 edition, but only where the fire marshal approves it, at street level and under strict conditions. That is why programs serve open-air yards, jobsites, and surface lots, and why apartment-garage fueling pitches rarely survive a fire marshal review.
Does mobile fueling work for gasoline, or only diesel?
Diesel dominates. Gasoline is a Class I flammable liquid, so fire codes restrict it more heavily and some jurisdictions approve diesel-only programs. A jobber planning to wet-hose gasoline should clear the plan with the local fire marshal before quoting the work.
How long does it take to qualify a driver for mobile fueling?
Budget two to three months. The slow step is the TSA security threat assessment behind the hazmat endorsement: fingerprints, a background check, and a recommended 60-day enrollment lead before the driver needs the determination. A first-time hazmat applicant must also finish entry-level training from a provider on the FMCSA Training Provider Registry (49 CFR 380.609), and the written endorsement test at the licensing agency comes on top of that.
Can one truck carry dyed diesel and clear diesel on the same route?
Yes, with separate compartments and clean per-unit records. Off-road equipment can legally burn untaxed dyed diesel while highway trucks at the same yard cannot, and dyed fuel metered into a highway vehicle for a taxable use draws IRS penalties. Compartmented tank trucks let one route serve both.
How do providers charge for mobile fueling?
Most charge the fuel cost plus a per-gallon service margin, a stop fee, or both, with a minimum gallon count per visit so small stops do not lose money. After-hours windows often price higher. Fleets weigh the premium against the driver hours they get back.
Sources, read October 25, 2026: 2024 International Fire Code, Chapter 57 (5706.5.4.5, 5707.4) and Chapter 1 (105.5.18); NFPA 30A revision adding Chapter 14 (2018 edition) and NFPA 30A second revision report (2024 edition, open parking structures); NIST Handbook 44 (2026), section 3.31; NCWM, states requiring NTEP certificates; 49 CFR 383.5, 383.93, 380.609 and 387.9; TSA, hazmat endorsement threat assessment; IRS Publication 510 (dyed diesel).