WinterStatus
Full qualified VSS Path: Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus
Description: Winter (cold-weather / snow) capability class of the tire currently fitted to this wheel.
Comment: Describes the cold-weather grip capability of the fitted tire, which is the primary determinant of available traction on snow and ice. Modelled as an attribute because it is a property of the mounted equipment that changes only when tires are swapped, not a continuously varying measurement. WINTER indicates a dedicated winter / snow tire (e.g. carrying the three-peak-mountain-snowflake 3PMSF marking), designed for cold-weather rubber compounds and tread patterns that retain grip below approximately 7 degrees Celsius and on snow / ice. NON_WINTER covers summer and all-season tires alike: neither is a dedicated winter tire, and from a snow-traction standpoint both leave the vehicle with materially reduced cold-weather grip. The summer-vs-all-season distinction is a longevity / comfort property that does not change the snow-safety answer and is therefore intentionally not split here. UNKNOWN shall be used when the fitted-tire winter capability cannot be determined (e.g. no tire-identification data available, or input confidence below threshold). Primary consumers: driver-warning systems and navigation systems that adapt snow / mountain-pass routing and advisory thresholds to the grip the vehicle actually has. Combined with per-wheel placement, allows detection of mismatched or partially-fitted winter tire sets. Criteria for each state may be OEM-, market-, or jurisdiction-specific (e.g. national winter-tire regulations differ). Related to VSS issue #877 (Connected Safety signals).
flowchart LR Vehicle-->Chassis Chassis-->Axle Axle-->Row1 Row1-->Wheel Wheel-->Left Left-->Tire Tire-->WinterStatus

Eclipse Leda: Usage Example

In Eclipse Kuksa.VAL Databroker CLI:

$ databroker-cli
sdv.databroker.v1 > connect
[connect] OK
sdv.databroker.v1 > get Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus
[get]  OK
Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus: ( NotAvailable )
sdv.databroker.v1 > set Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus UNKNOWN
[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.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus

Data Type & Unit
Path Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus VSS: Addressing nodes
Data type string VSS: Datatypes
Default value UNKNOWN VSS: Sensors & Actuators
Allowed values ['UNKNOWN', 'NON_WINTER', 'WINTER'] VSS: Specifying allowed values

Note: The string datatype is a character string.

Signal Information

The vehicle signal Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus is an Attribute.

The vehicle signal Vehicle.Chassis.Axle.Row1.Wheel.Left.Tire.WinterStatus is a Signal.

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.