ActiveAutonomyLevel
Full qualified VSS Path: Vehicle.ADAS.ActiveAutonomyLevel
Description: Indicates the currently active level of driving automation according to the SAE J3016 (Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor Vehicles).
Comment: Complies with https://www.sae.org/standards/content/j3016_202104/ and https://www.sae.org/blog/sae-j3016-update. Level 5 and 4 ADS (Automated driving system) disengage, if appropriate, only after it achieves a minimal risk condition or a driver is performing the DDT. Level 3 ADS disengages either an appropriate time after issuing a request to intervene or immediately upon user request. Level 2 DAS (Driving automation system) disengages immediately upon driver request. However, since many Level 2 DAS, often termed “Level 2.5”, warn the driver shortly before reaching their operational limits, the VSS also supports the DISENGAGING state for SAE_2. Nevertheless, it should be noted that the SAE J3016 states that it is incorrect to describe driving automation features using fractional levels.
flowchart LR Vehicle-->ADAS ADAS-->ActiveAutonomyLevel

Eclipse Leda: Usage Example

In Eclipse Kuksa.VAL Databroker CLI:

$ databroker-cli
sdv.databroker.v1 > connect
[connect] OK
sdv.databroker.v1 > get Vehicle.ADAS.ActiveAutonomyLevel
[get]  OK
Vehicle.ADAS.ActiveAutonomyLevel: ( NotAvailable )
sdv.databroker.v1 > set Vehicle.ADAS.ActiveAutonomyLevel Foo
[set]  OK

Digital Auto: Playground

playground.digital.auto provides an in-browser, rapid prototyping environment utilizing the COVESA APIs for connected vehicles.

Vehicle Model Direct link to Vehicle Signal
ACME Car (EV) v0.1 Vehicle.ADAS.ActiveAutonomyLevel

Data Type & Unit
Path Vehicle.ADAS.ActiveAutonomyLevel VSS: Addressing nodes
Data type string VSS: Datatypes
Allowed values ['SAE_0', 'SAE_1', 'SAE_2_DISENGAGING', 'SAE_2', 'SAE_3_DISENGAGING', 'SAE_3', 'SAE_4_DISENGAGING', 'SAE_4', 'SAE_5_DISENGAGING', 'SAE_5'] VSS: Specifying allowed values

Note: The string datatype is a character string.

Signal Information

The vehicle signal Vehicle.ADAS.ActiveAutonomyLevel is a Sensor.

The vehicle signal Vehicle.ADAS.ActiveAutonomyLevel is a Signal.

UUID

Each vehicle signal is identified by a Universally Unique Identifier (UUID)

The UUID for Vehicle.ADAS.ActiveAutonomyLevel is b101c6928fc55948b1cc485e568ecd8d

Feedback

Do you think this Vehicle Signal specification needs enhancement? Do you want to discuss with experts? Try the following ressources to get in touch with the VSS community:
Enhancement request Create COVESA GitHub Issue
Join COVESA www.covesa.global
Discuss VSS on Slack w3cauto.slack.com
VSS Data Experts on Google Groups covesa.global data-expert-group

About VSS

The Vehicle Signal Specification (VSS) is an initiative by COVESA to define a syntax and a catalog for vehicle signals. The source code and releases can be found in the VSS github repository.

Supported datatypes

The following is a list of VSS supported built-in datatypes:

Name Type Min Max
uint8 unsigned 8-bit integer 0 255
int8 signed 8-bit integer -128 127
uint16 unsigned 16-bit integer 0 65535
int16 signed 16-bit integer -32768 32767
uint32 unsigned 32-bit integer 0 4294967295
int32 signed 32-bit integer -2147483648 2147483647
uint64 unsigned 64-bit integer 0 2^64 - 1
int64 signed 64-bit integer -2^63 2^63 - 1
boolean boolean value 0/false 1/true
float floating point number -3.4e -38 3.4e 38
double double precision floating point number -1.7e -300 1.7e 300
string character string n/a n/a

Min, max and default values defined in a Vehicle Signal Specification must be in the supported range of the data type.