1 Definition
Data sent by a specific Environment Sensing Technology Scene Description AIM to the AMS’s Traffic Obstacle Avoider because it is considered to hold information to be processed urgently, hence before the full Basic Scene Descriptors Data is computed.
2 Functional Requirements
An Alert includes specific objects that are deemed to require consideration. For example, a Scene Description AIM may immediately send a suddenly unobscured traffic sign to the Traffic Obstacle Avoider for consideration.
The EST Scene Description AIM may attach an Annotation to the Object that includes the semantics of the traffic sign Object. It may also add other numerical or textual information extracted from the Object. An example of Annotation is an element of the Vienna Convention on Road Signs and Signals for which CAV-TEC V1.0 provides the sign semantics.
3 Syntax
https://schemas.mpai.community/CAV2/V1.0/data/Alert.json
4 Semantics
| Label | Size | Description |
| Header | N1 Bytes | Alert Header |
| – Standard | 9 Bytes | The characters “CAV-ALT-V” |
| – Version | N2 Bytes | Major version – 1 or 2 Bytes |
| – Dot-separator | 1 Byte | The character “.” |
| – Subversion | N3 Bytes | Minor version – 1 or 2 Bytes |
| Objects[] | N4 Bytes | Set of relevant Objects. |
| – Object | N5 Bytes | An Object of the set. |
| DescrMetadata | N6 Bytes | Descriptive Metadata. |
