25/08/2026
The Most Common (and Preventable) ADR Roadside Prohibition
BECCY Ricketts
August 19, 2026
Fire extinguishers might seem like a small part of dangerous goods transport compliance until they become the reason a vehicle fails a roadside inspection.
When a transport unit is carrying dangerous goods under ADR, the fire-fighting equipment on board must be correct, suitable and ready to use. ADR requires portable fire extinguishers suitable for fire classes A, B and C:
In plain English, that means coverage for fires involving solid combustible materials, flammable liquids and flammable gases — exactly the sort of risk profile that can exist around vehicles, fuel, packaging and dangerous goods operations.
The minimum extinguisher provision depends on the maximum permissible mass of the transport unit:
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But compliance is not just about having extinguishers somewhere on the vehicle.
They must be suitable for vehicle use, comply with EN 3 Portable Fire Extinguishers, Part 7, be inspected, sealed, marked with the inspection date or permitted period of use, protected from the weather, and readily accessible to the crew.
That matters, because roadside checks by DVSA and the police continue to find the same avoidable failures: missing seals, no pressure, out-of-date inspections, worn or missing maintenance records, unclear markings, extinguishers buried in lockers or under bunks, and containers that are not weatherproof.
In one recent roadside inspection exercise, 242 vehicles were stopped. 86 were found to be non-compliant with dangerous goods requirements. 50 prohibition notices were issued and 24 of those related to fire extinguishers.
That is almost half of the prohibition notices linked to one piece of equipment.
At ADR Express, we take this seriously. Fire extinguisher compliance is built into our vehicle readiness process, so the required equipment is on board, in date, pressurised, sealed, clearly marked, weather-protected and accessible before a regulated load moves.
Because in dangerous goods transport, small details are not small details they are part of safe, compliant operations.