Certification is usually discussed at vehicle scale: trailers, bodies, superstructures. Inside Turkey's regulation on special equipment for the carriage of perishable foodstuffs there is a single-article section devoted to small containers, and operationally it means a good deal.

First the definition: a container is special transport equipment

Article 4 of the regulation lists special transport equipment as vehicle bodies, containers, insulated transport containers and the like. Vehicle and container sit inside the same definition. That is not a legal nicety; it says a container is an object that can be certified in its own right.

What Article 16 does

In series production of containers with an internal volume below 2 m³, the ATP certificate may be issued for the whole batch of the relevant type rather than for each container. The serial numbers of the containers are then entered on the certificate as a range.

The comparison makes this visible. On the body side the type test is repeated on a reference unit for every batch of 250, with production count and years tracked together. On the small-container side the type is tested once and the batch certificate runs on a serial number range.

The smaller the unit of certification, the more a refrigerated vehicle alternative turns from a technical question into a planning one.

What it means in operation

Adding a body to the fleet means an inspection appointment, a test centre and a vehicle movement. The same job on the container side is paperwork: if the report for the type stands, the serial numbers of the new batch go onto the certificate. For an operation that wants to raise equipment count by season, that difference sets the speed of a capacity decision.

ItemVehicle bodyContainer under 2 m³
Type teston a reference unit, renewed per 250-unit batchonce per type
Unit of certificationeach item of equipmentthe batch of the type, by serial number range
Raising capacityvehicle plus inspection appointmentadded to the batch certificate

The six-month window for counting as unused

Article 14 adds one more detail: for insulated equipment to count as unused, the application must be made by the end of six months from the date of registration. Equipment past that period falls under the definition of used and is subject to periodic inspection when certification is applied for. For equipment waiting in a warehouse, that is a date which passes quietly.

Where the boundary sits

Two cubic metres is a small volume. A large insulated container on a pallet base stays above the line and falls under the general rule. What sits below tends to be wheeled containers, thermoboxes and small-volume transport containers. Without knowing the internal volume of the model in front of you, there is no way to say which route applies.