Transport Code Types

The Transportation & Cargo API reads transport identifiers through POST /transport/{type}. The type path parameter selects which family of codes the engine should search for.

Supported Types

Type	Purpose	Typical identifiers
iso	ISO container and intermodal loading unit recognition.	BIC/ISO 6346 owner code, serial number, check digit, optional ISO equipment/type code.
truck	Truck and road transport identifiers.	ACCR, US DOT, chassis and similar road vehicle fleet identifiers.
eu-rail	European railway vehicle identifiers.	Wagon and locomotive identifiers used across Europe.
am-rail	American railway vehicle identifiers.	Wagon and locomotive identifiers used on the American continent.

Validation Behavior

Many transport identifiers contain a checksum. By default, the API verifies that checksum and discards results where validation fails. Send x-disable-checksum-check: true when you need to inspect low-confidence or checksum-invalid reads.

Type-specific Headers

Header	Applies to	Effect
x-disable-iso-code	iso	Disables searching for and reading the last four digits of the ISO container equipment/type code.
x-enable-full-us-accr-code	truck / accr_usa engine mode	Enables full US ACCR code recognition where supported by the engine configuration.

Request Example

curl -X POST "https://api.carmencloud.com/transport/iso" \
  -H "x-api-key: $CARMEN_API_KEY" \
  -F "image=@container.jpg" \
  -F "maxreads=1"

Response Shape

Transport responses contain a data.codes array. Each item represents one merged code result and can include per-image details under imageResults.

{
  "version": "1.0.1",
  "data": {
    "codes": [
      {
        "code": "MSCU1234567",
        "confidence": 96,
        "imageResults": []
      }
    ]
  }
}