Go to CAV-TEC V1.1 Data Types

Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment

1      Definition

AMS Data is the Data Type representing the information stored by the AMS Memory (CAV‑AMM) AIM and made available to authorised external applications requiring access to the AMS recorded operational context.

2      Functional Requirements

AMS Data includes:

  1. Time when the AMS Data instance was produced.
  2. Identifier of the Route produced by Route Selection Planning.
  3. Path produced by Path Selection Planning.
  4. Trajectory produced by Motion Selection Planning.
  5. Road State produced by Traffic Obstacle Avoidance.
  6. CAV State produced by Traffic Obstacle Avoidance.
  7. Full Environment Descriptors produced by Full Environment Description.
  8. AMS‑MAS Messages exchanged between AMS and Motion Actuation Subsystem.
  9. Alert produced by an Environment Sensing Technology Scene Description AIM.

These data collectively represent the operational situation, vehicle state, environmental conditions, and system-level decisions managed by the AMS.

3      Syntax

https://schemas.mpai.community/CAV2/V1.1/data/AMSData.json

4      Semantics

Table 1 – Semantics of the AMS Data Data Type

Label
Description
Header AMS Data Header – Standard “CAV‑AMD‑Vx.y”.
MInstanceID Identifier of the M-Instance (Virtual Space) associated with this AMS Data instance.
UEnvironmentID Identifier of the U-Environment (Real Space) associated with this AMS Data instance.
AMSDataID Unique identifier of this AMS Data instance.
AMSDataTime Time this AMS Data instance was produced.
RouteID Identifier of the Route produced by Route Selection Planning.
Path Path produced by Path Selection Planning.
Trajectory Trajectory produced by Motion Selection Planning.
Alert Alert produced by an Environment Sensing Technology Scene Description AIM.
RoadState Road State produced by Traffic Obstacle Avoidance.
CAVState CAV State produced by Traffic Obstacle Avoidance.
FED Full Environment Descriptors produced by Full Environment Description.
AMSMASMessage AMS‑MAS Messages exchanged between AMS and Motion Actuation Subsystem.
DataXMData MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this AMS Data instance in a trusted data exchange context.
DescrMetadata Human-readable descriptive metadata of the AMS Data instance (plain text, max 2048 characters).

5      Conformance Testing

A Data instance conforms with AMS Data (CAV‑AMD) if:

  1. The Data validates against the AMS Data’s JSON Schema.
  2. All Data in the AMS Data’s JSON Schema:
    1. Have the specified type.
    2. Validate against their JSON Schemas.
    3. Conform with their Data Qualifiers.

6      Performance Assessment

Not part of this specification.

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