ETSI-ITS-CDD.md 408 KB
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This DE indicates the horizontal position confidence value which represents the estimated absolute position accuracy, in one of the axis direction as defined in a shape of ellipse with a 
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 confidence level of 95 %. 
 
 The value shall be set to:
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 - `n` (`n > 0` and `n < 4 094`) if the accuracy is equal to or less than n * 0,01 metre,
 - `4 094` if the accuracy is out of range, i.e. greater than 4,093 m,
 - `4 095` if the accuracy information is unavailable.
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 The value 0 shall not be used.
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Values:
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* **doNotUse** (0)<br>
* **outOfRange** (4094)<br>
* **unavailable** (4095)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,01 metre_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** GeoReference Information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1_
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NOTE:&emsp;The fact that a position coordinate value is received with confidence value set to `unavailable(4095)`.
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 can be caused by several reasons, such as:
 - the sensor cannot deliver the accuracy at the defined confidence level because it is a low-end sensor,
 - the sensor cannot calculate the accuracy due to lack of variables, or
 - there has been a vehicle bus (e.g. CAN bus) error.
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 In all 3 cases above, the position coordinate value may be valid and used by the application.
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 If a position coordinate value is received and its confidence value is set to `outOfRange(4094)`, it means that
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 the position coordinate value is not valid and therefore cannot be trusted. Such value is not useful
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 for the application.
>>>
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```asn1
SemiAxisLength ::= INTEGER{
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    doNotUse    (0),
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    outOfRange  (4094), 
    unavailable (4095)
} (0..4095)
```

### <a name="SensorType"></a>SensorType
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This DE indicates the type of sensor.
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 The value shall be set to:
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 - 0  `undefined`         - in case the sensor type is undefined. 
 - 1  `radar`             - in case the sensor is a radar,
 - 2  `lidar`             - in case the sensor is a lidar,
 - 3  `monovideo`         - in case the sensor is mono video,
 - 4  `stereovision`      - in case the sensor is stereo vision,
 - 5  `nightvision`       - in case the sensor is night vision,
 - 6  `ultrasonic`        - in case the sensor is ultrasonic,
 - 7  `pmd`               - in case the sensor is photonic mixing device,
 - 8  `inductionLoop`     - in case the sensor is an induction loop,
 - 9  `sphericalCamera`   - in case the sensor is a spherical camera,
 - 10 `uwb`               - in case the sensor is ultra wide band,
 - 11 `acoustic`          - in case the sensor is acoustic,
 - 12 `localAggregation`  - in case the information is provided by a system that aggregates information from different local sensors. Aggregation may include fusion,
 - 13 `itsAggregation`    - in case the information is provided by a system that aggregates information from other received ITS messages.
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 - 14-31                  - are reserved for future usage.
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Values:
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* **undefined** (0)<br>
* **radar** (1)<br>
* **lidar** (2)<br>
* **monovideo** (3)<br>
* **stereovision** (4)<br>
* **nightvision** (5)<br>
* **ultrasonic** (6)<br>
* **pmd** (7)<br>
* **inductionLoop** (8)<br>
* **sphericalCamera** (9)<br>
* **uwb** (10)<br>
* **acoustic** (11)<br>
* **localAggregation** (12)<br>
* **itsAggregation** (13)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Sensing Information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _created in V2.1.1_
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```asn1
SensorType ::= INTEGER {
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    undefined         (0),
    radar             (1),
    lidar             (2),
    monovideo         (3),
    stereovision      (4),
    nightvision       (5),
    ultrasonic        (6),
    pmd               (7),
    inductionLoop     (8),
    sphericalCamera   (9),
    uwb               (10),
    acoustic          (11),
    localAggregation  (12),
    itsAggregation    (13)
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} (0..31)
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### <a name="SensorTypes"></a>SensorTypes
This DE indicates the type of sensor(s).
 The corresponding bit shall be set to 1 under the following conditions:
 
 - 0  `undefined`         - in case the sensor type is undefined. 
 - 1  `radar`             - in case the sensor is a radar,
 - 2  `lidar`             - in case the sensor is a lidar,
 - 3  `monovideo`         - in case the sensor is mono video,
 - 4  `stereovision`      - in case the sensor is stereo vision,
 - 5  `nightvision`       - in case the sensor is night vision,
 - 6  `ultrasonic`        - in case the sensor is ultrasonic,
 - 7  `pmd`               - in case the sensor is photonic mixing device,
 - 8  `inductionLoop`     - in case the sensor is an induction loop,
 - 9  `sphericalCamera`   - in case the sensor is a spherical camera,
 - 10 `uwb`               - in case the sensor is ultra wide band,
 - 11 `acoustic`          - in case the sensor is acoustic,
 - 12 `localAggregation`  - in case the information is provided by a system that aggregates information from different local sensors. Aggregation may include fusion,
 - 13 `itsAggregation`    - in case the information is provided by a system that aggregates information from other received ITS messages.
 - 14-15                  - are reserved for future usage.

Values:
* **undefined** (0)<br>
* **radar** (1)<br>
* **lidar** (2)<br>
* **monovideo** (3)<br>
* **stereovision** (4)<br>
* **nightvision** (5)<br>
* **ultrasonic** (6)<br>
* **pmd** (7)<br>
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* **inductionLoop** (8)<br>
* **sphericalCamera** (9)<br>
* **uwb** (10)<br>
* **acoustic** (11)<br>
* **localAggregation** (12)<br>
* **itsAggregation** (13)<br>
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Sensing Information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _created in V2.2.1_

>>>
NOTE:&emsp;If all bits are set to 0, then no sensor type is used
>>>

```asn1
SensorTypes ::= BIT STRING {
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    undefined         (0),
    radar             (1),
    lidar             (2),
    monovideo         (3),
    stereovision      (4),
    nightvision       (5),
    ultrasonic        (6),
    pmd               (7),
    inductionLoop     (8),
    sphericalCamera   (9),
    uwb               (10),
    acoustic          (11),
    localAggregation  (12),
    itsAggregation    (13)
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} (SIZE (16,... ))
```

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### <a name="SequenceNumber"></a>SequenceNumber
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This DE represents a sequence number.
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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```asn1
SequenceNumber ::=  INTEGER (0..65535)
```

### <a name="SignalViolationSubCauseCode"></a>SignalViolationSubCauseCode
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This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `signalViolation`.
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 The value shall be set to:
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 - 0 `unavailable`               - in case further detailed information on signal violation event is unavailable,
 - 1 `stopSignViolation`         - in case a stop sign violation is detected,
 - 2 `trafficLightViolation`     - in case a traffic light violation is detected,
 - 3 `turningRegulationViolation`- in case a turning regulation violation is detected.
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 - 4-255                         - are reserved for future usage.
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Values:
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* **unavailable** (0)<br>
* **stopSignViolation** (1)<br>
* **trafficLightViolation** (2)<br>
* **turningRegulationViolation** (3)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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```asn1
SignalViolationSubCauseCode ::= INTEGER {
    unavailable                (0), 
    stopSignViolation          (1), 
    trafficLightViolation      (2), 
    turningRegulationViolation (3)
} (0..255)
```

### <a name="SlowVehicleSubCauseCode"></a>SlowVehicleSubCauseCode
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This DE represents the sub cause codes of the [**CauseCode**](#CauseCode) "slowVehicle".
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 The value shall be set to:
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 - 0 `unavailable`                    - in case further detailed information on slow vehicle driving event is
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                                        unavailable,
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 - 1 `maintenanceVehicle`             - in case of a slow driving maintenance vehicle on the road,
 - 2 `vehiclesSlowingToLookAtAccident`- in case vehicle is temporally slowing down to look at accident, spot, etc.,
 - 3 `abnormalLoad`                   - in case an abnormal loaded vehicle is driving slowly on the road,
 - 4 `abnormalWideLoad`               - in case an abnormal wide load vehicle is driving slowly on the road,
 - 5 `convoy`                         - in case of slow driving convoy on the road,
 - 6 `snowplough`                     - in case of slow driving snow plough on the road,
 - 7 `deicing`                        - in case of slow driving de-icing vehicle on the road,
 - 8 `saltingVehicles`                - in case of slow driving salting vehicle on the road.
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 - 9-255                              - are reserved for future usage.
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Values:
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* **unavailable** (0)<br>
* **maintenanceVehicle** (1)<br>
* **vehiclesSlowingToLookAtAccident** (2)<br>
* **abnormalLoad** (3)<br>
* **abnormalWideLoad** (4)<br>
* **convoy** (5)<br>
* **snowplough** (6)<br>
* **deicing** (7)<br>
* **saltingVehicles** (8)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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```asn1
SlowVehicleSubCauseCode ::= INTEGER {
    unavailable                     (0), 
    maintenanceVehicle              (1), 
    vehiclesSlowingToLookAtAccident (2), 
    abnormalLoad                    (3), 
    abnormalWideLoad                (4), 
    convoy                          (5), 
    snowplough                      (6), 
    deicing                         (7), 
    saltingVehicles                 (8)
} (0..255)
```

### <a name="SpecialTransportType"></a>SpecialTransportType
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The DE indicates if a vehicle is carrying goods in the special transport conditions.
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 The corresponding bit shall be set to 1 under the following conditions:
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 - 0 `heavyLoad`        - the vehicle is carrying goods with heavy load,
 - 1 `excessWidth`      - the vehicle is carrying goods in excess of width,
 - 2 `excessLength`     - the vehicle is carrying goods in excess of length,
 - 3 `excessHeight`     - the vehicle is carrying goods in excess of height.
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 Otherwise, the corresponding bit shall be set to 0.

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Values:
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* **heavyLoad** (0)<br>
* **excessWidth** (1)<br>
* **excessLength** (2)<br>
* **excessHeight** (3)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Vehicle information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1_
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```asn1
SpecialTransportType ::= BIT STRING {
    heavyLoad    (0),
    excessWidth  (1), 
    excessLength (2), 
    excessHeight (3)
} (SIZE(4))
```

### <a name="SpeedConfidence"></a>SpeedConfidence
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This DE indicates the speed confidence value which represents the estimated absolute accuracy of a speed value with a default confidence level of 95 %.
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 If required, the confidence level can be defined by the corresponding standards applying this DE.
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 The value shall be set to:
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 - `n` (`n > 0` and `n < 126`) if the confidence value is equal to or less than n * 0,01 m/s.
 - `126` if the confidence value is out of range, i.e. greater than 1,25 m/s,
 - `127` if the confidence value information is not available.
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Values:
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* **outOfRange** (126)<br>
* **unavailable** (127)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,01 m/s_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Vehicle information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1_
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NOTE:&emsp;If a speed value is received and its confidence value is set to `outOfRange(126)`, it means that the speed value is not valid 
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 and therefore cannot be trusted. Such is not useful for the application.
>>>
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```asn1
SpeedConfidence ::= INTEGER {
    outOfRange  (126), 
    unavailable (127)
} (1..127)
```

### <a name="SpeedLimit"></a>SpeedLimit
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This DE represents a speed limitation applied to a geographical position, a road section or a geographical region.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _km/h_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Infrastructure information Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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```asn1
SpeedLimit ::= INTEGER (1..255)
```

### <a name="SpeedValue"></a>SpeedValue
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This DE represents a speed value, i.e. the magnitude of the velocity-vector. 
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 The value shall be set to:
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 - `0` in a standstill situation.
 - `n` (`n > 0` and `n < 16 382`) if the applicable value is equal to or less than n x 0,01 m/s, and greater than (n-1) x 0,01 m/s,
 - `16 382` for speed values greater than 163,81 m/s,
 - `16 383` if the speed accuracy information is not available.
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Values:
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* **standstill** (0)<br>
* **outOfRange** (16382)<br>
* **unavailable** (16383)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,01 m/s_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1 (the meaning of 16382 has changed slightly)_
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NOTE:&emsp;the definition of standstill is out of scope of the present document.
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>>>
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```asn1
SpeedValue ::= INTEGER {
    standstill  (0), 
    outOfRange  (16382), 
    unavailable (16383)
} (0..16383)
```

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### <a name="StoredInformationType"></a>StoredInformationType
This DE indicates the type of stored information.

 The corresponding bit shall be set to 1 under the following conditions:
 
 - `0` undefined        - in case the stored information type is undefined. 
 - `1` staticDb         - in case the stored information type is a static database.
 - `2` dynamicDb        - in case the stored information type is a dynamic database
 - `3` realTimeDb       - in case the stored information type is a real time updated database.
 - `4` map              - in case the stored information type is a road topology map.
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 - Bits 5 to 7          - are reserved for future use.
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Values:
* **undefined** (0)<br>
* **staticDb** (1)<br>
* **dynamicDb** (2)<br>
* **realTimeDb** (3)<br>
* **map** (4)<br>

&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic Information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _created in V2.2.1_

>>>
NOTE:&emsp;If all bits are set to 0, then no stored information type is used
>>>

```asn1
StoredInformationType::= BIT STRING {
    undefined       (0),
    staticDb	    (1),    
    dynamicDb   	(2),
    realTimeDb  	(3),
    map		    	(4)	
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} (SIZE (8,... ))
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### <a name="VelocityComponentValue"></a>VelocityComponentValue
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This DE represents the value of a velocity component in a defined coordinate system.
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 The value shall be set to:
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 - `-16 383` if the velocity is equal to or smaller than -163,83 m/s,
 - `n` (`n > -16 383` and `n < 16 382`) if the applicable value is equal to or less than n x 0,01 m/s, and greater than (n-1) x 0,01 m/s,
 - `16 382` for velocity values equal to or greater than 163,81 m/s,
 - `16 383` if the velocity information is not available.
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Values:
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* **negativeOutOfRange** (-16383)<br>
* **positiveOutOfRange** (16382)<br>
* **unavailable** (16383)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,01 m/s_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
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VelocityComponentValue ::= INTEGER {
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    negativeOutOfRange (-16383),
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    positiveOutOfRange  (16382),
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    unavailable        (16383)
} (-16383..16383)
```

### <a name="StabilityLossProbability"></a>StabilityLossProbability
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This DE indicates the estimated probability of a stability level and conversely also the probability of a stability loss.
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 The value shall be set to:
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 - `0` to indicate an estimated probability of a loss of stability of 0 %, i.e. "stable", 
 - `n` (`n > 0` and `n < 50`) to indicate the actual stability level,
 - `50` to indicate a estimated probability of a loss of stability of 100 %, i.e. "total loss of stability",
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 - the values between 51 and 62 are reserved for future use,
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 - `63`: this value indicates that the information is unavailable.
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Values:
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* **stable** (0)<br>
* **totalLossOfStability** (50)<br>
* **unavailable** (63)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _2 %_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StabilityLossProbability ::= INTEGER {
    stable                  (0), 
    totalLossOfStability   (50), 
    unavailable            (63) 
} (0..63)
```

### <a name="StandardLength12b"></a>StandardLength12b
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The DE represents length as a measure of distance between points or as a dimension of an object or shape.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,1 metre_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StandardLength12b::= INTEGER (0..4095)
```

### <a name="StandardLength3b"></a>StandardLength3b
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The DE represents length as a measure of distance between points. 
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 The value shall be set to:
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 - 0 `lessThan50m`   - for distances below 50 m, 
 - 1 `lessThan100m`  - for distances below 100 m,
 - 2 `lessThan200m`  - for distances below 200 m, 
 - 3 `lessThan500m`  - for distances below 300 m, 
 - 4 `lessThan1000m` - for distances below 1 000 m,
 - 5 `lessThan5km`   - for distances below 5 000 m, 
 - 6 `lessThan10km`  - for distances below 10 000 m, 
 - 7 `over10km`      - for distances over 10 000 m.
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Values:
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* **lessThan50m** (0)<br>
* **lessThan100m** (1)<br>
* **lessThan200m** (2)<br>
* **lessThan500m** (3)<br>
* **lessThan1000m** (4)<br>
* **lessThan5km** (5)<br>
* **lessThan10km** (6)<br>
* **over10km** (7)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** GeoReference information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1 from RelevanceDistance_
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```asn1
StandardLength3b ::= ENUMERATED {
    lessThan50m   (0), 
    lessThan100m  (1), 
    lessThan200m  (2), 
    lessThan500m  (3), 
    lessThan1000m (4), 
    lessThan5km   (5), 
    lessThan10km  (6), 
    over10km      (7)
}
```

### <a name="StandardLength9b"></a>StandardLength9b
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The DE represents length as a measure of distance between points or as a dimension of an object.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,1 metre_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StandardLength9b::= INTEGER (0..511)
```

### <a name="StandardLength1B"></a>StandardLength1B
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The DE represents length as a measure of distance between points or as a dimension of an object.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,1 metre_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StandardLength1B::= INTEGER (0..255)
```

### <a name="StandardLength2B"></a>StandardLength2B
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The DE represents length as a measure of distance between points or as a dimension of an object.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,1 metre_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StandardLength2B::= INTEGER (0..65535)
```

### <a name="StationarySince"></a>StationarySince
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This DE indicates the duration in minutes since which something is stationary.
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 The value shall be set to:
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 - 0 `lessThan1Minute`         - for being stationary since less than 1 minute, 
 - 1 `lessThan2Minutes`        - for being stationary since less than 2 minute and for equal to or more than 1 minute,
 - 2 `lessThan15Minutes`       - for being stationary since less than 15 minutes and for equal to or more than 1 minute,
 - 3 `equalOrGreater15Minutes` - for being stationary since equal to or more than 15 minutes.
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Values:
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* **lessThan1Minute** (0)<br>
* **lessThan2Minutes** (1)<br>
* **lessThan15Minutes** (2)<br>
* **equalOrGreater15Minutes** (3)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1_
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```asn1
StationarySince ::= ENUMERATED {
    lessThan1Minute         (0), 
    lessThan2Minutes        (1), 
    lessThan15Minutes       (2), 
    equalOrGreater15Minutes (3)
}
```

### <a name="StationaryVehicleSubCauseCode"></a>StationaryVehicleSubCauseCode
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This DE provides the value of the sub cause codes of the [**CauseCode**](#CauseCode) "stationaryVehicle". 
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 The value shall be set to:
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 - 0 `unavailable`           - in case further detailed information on stationary vehicle is unavailable,
 - 1 `humanProblem`          - in case stationary vehicle is due to health problem of driver or passenger,
 - 2 `vehicleBreakdown`      - in case stationary vehicle is due to vehicle break down,
 - 3 `postCrash`             - in case stationary vehicle is caused by collision,
 - 4 `publicTransportStop`   - in case public transport vehicle is stationary at bus stop,
 - 5 `carryingDangerousGoods`- in case the stationary vehicle is carrying dangerous goods,
 - 6 `vehicleOnFire`         - in case of vehicle on fire.
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 - 7-255 reserved for future usage.

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Values:
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* **unavailable** (0)<br>
* **humanProblem** (1)<br>
* **vehicleBreakdown** (2)<br>
* **postCrash** (3)<br>
* **publicTransportStop** (4)<br>
* **carryingDangerousGoods** (5)<br>
* **vehicleOnFire** (6)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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```asn1
StationaryVehicleSubCauseCode ::= INTEGER {
    unavailable            (0), 
    humanProblem           (1), 
    vehicleBreakdown       (2), 
    postCrash              (3), 
    publicTransportStop    (4), 
    carryingDangerousGoods (5), 
    vehicleOnFire          (6)
} (0..255)
```

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### <a name="StationId"></a>StationId
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This DE represents the identifier of an ITS-S.
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 The ITS-S ID may be a pseudonym. It may change over space and/or over time.

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1 based on [**StationID**](#StationID)_
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```asn1
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StationId ::= INTEGER(0..4294967295)
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### <a name="StationID"></a>StationID
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This DE represents the identifier of an ITS-S.
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 The ITS-S ID may be a pseudonym. It may change over space and/or over time.

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_
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NOTE:&emsp;this DE is kept for backwards compatibility reasons only. It is recommended to use the [**StationId**](#StationId) instead.
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>>>
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```asn1
StationID ::= INTEGER(0..4294967295)
```

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### <a name="StationType"></a>StationType
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This DE represents the type of technical context the ITS-S is integrated in.
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 The station type depends on the integration environment of ITS-S into vehicle, mobile devices or at infrastructure.
 
 The value shall be set to:
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 - 0 `unknown`          - information about the ITS-S context is not provided,
 - 1 `pedestrian`       - ITS-S carried by human being not using a mechanical device for their trip (VRU profile 1),
 - 2 `cyclist`          - ITS-S mounted on non-motorized unicycles, bicycles , tricycles, quadracycles (VRU profile 2),
 - 3 `moped`            - ITS-S mounted on light motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) 
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                            class L1, L2 (VRU Profile 3),
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 - 4 `motorcycles`      - ITS-S mounted on motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) 
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                            class L3, L4, L5, L6, L7 (VRU Profile 3),
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 - 5 `passengerCar`     - ITS-S mounted on small passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class M1,
 - 6 `bus`              - ITS-S mounted on large passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class M2, M3,
 - 7 `lightTruck`       - ITS-S mounted on light Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class N1,
 - 8 `heavyTruck`       - ITS-S mounted on Heavy Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class N2 and N3,
 - 9 `trailer`          - ITS-S mounted on an unpowered vehicle that is intended to be towed by a powered vehicle as defined in 
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                            UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class O,
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 - 10 `specialVehicles` - ITS-S mounted on vehicles which have special purposes other than the above (e.g. moving road works vehicle),
 - 11 `tram`            - ITS-S mounted on a vehicle which runs on tracks along public streets,
 - 12 `lightVruVehicle` - ITS-S carried by a human being traveling on light vehicle , incl. possible use of roller skates or skateboards (VRU profile 2),
 - 13 `animal`          - ITS-S carried by an animal presenting a safety risk to other road users e.g. domesticated dog in a city or horse (VRU Profile 4),
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 - 14                   - reserved for future usage,
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 - 15 `roadSideUnit`    - ITS-S mounted on an infrastructure typically positioned outside of the drivable roadway (e.g. on a gantry, on a pole, 
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                            on a stationary road works trailer); the infrastructure is static during the entire operation period of the ITS-S (e.g. no stop and go activity),
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 - 16-255               - are reserved for future usage.
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Values:
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* **unknown** (0)<br>
* **pedestrian** (1)<br>
* **cyclist** (2)<br>
* **moped** (3)<br>
* **motorcycle** (4)<br>
* **passengerCar** (5)<br>
* **bus** (6)<br>
* **lightTruck** (7)<br>
* **heavyTruck** (8)<br>
* **trailer** (9)<br>
* **specialVehicle** (10)<br>
* **tram** (11)<br>
* **lightVruVehicle** (12)<br>
* **animal** (13)<br>
* **roadSideUnit** (15)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Communication information. 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _revised in V2.1.1 (named values 12 and 13 added and note to value 9 deleted)_
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NOTE:&emsp;this DE is kept for backwards compatibility reasons only. It is recommended to use the [**TrafficParticipantType**](#TrafficParticipantType) instead.
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```asn1
StationType ::= INTEGER {
    unknown         (0), 
    pedestrian      (1), 
    cyclist         (2), 
    moped           (3), 
    motorcycle      (4), 
    passengerCar    (5), 
    bus             (6), 
    lightTruck      (7), 
    heavyTruck      (8), 
    trailer         (9), 
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    specialVehicle  (10), 
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    tram            (11), 
    lightVruVehicle (12), 
    animal          (13), 
    roadSideUnit    (15)
} (0..255)
```

### <a name="SteeringWheelAngleConfidence"></a>SteeringWheelAngleConfidence
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This DE indicates the steering wheel angle confidence value which represents the estimated absolute accuracy for a  steering wheel angle value with a confidence level of 95 %.
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 The value shall be set to:
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 - `n` (`n > 0` and `n < 126`) if the confidence value is equal to or less than n x 1,5 degrees,
 - `126` if the confidence value is out of range, i.e. greater than 187,5 degrees,
 - `127` if the confidence value is not available.
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 If a steering wheel angle value is received and its confidence value is set to `outOfRange(126)`,
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 it means that the steering wheel angle value is not valid and therefore cannot be trusted.
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 Such value is not useful for the application.

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Values:
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* **outOfRange** (126)<br>
* **unavailable** (127)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _1,5 degree_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Vehicle Information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1_
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NOTE:&emsp;The fact that a steering wheel angle value is received with confidence value set to `unavailable(127)`
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 can be caused by several reasons, such as:
 - the sensor cannot deliver the accuracy at the defined confidence level because it is a low-end sensor,
 - the sensor cannot calculate the accuracy due to lack of variables, or
 - there has been a vehicle bus (e.g. CAN bus) error.
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 In all 3 cases above, the steering wheel angle value may be valid and used by the application.
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>>>
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```asn1
SteeringWheelAngleConfidence ::= INTEGER {
    outOfRange                      (126), 
    unavailable                     (127)
} (1..127)
```

### <a name="SteeringWheelAngleValue"></a>SteeringWheelAngleValue
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This DE represents the steering wheel angle of the vehicle at certain point in time.
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 The value shall be provided in the vehicle coordinate system as defined in ISO 8855 [[21]](#references), clause 2.11.
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 The value shall be set to:
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 - `-511` if the steering wheel angle is equal to or greater than 511 x 1,5 degrees = 766,5 degrees to the right,
 - `n` (`n > -511` and `n ≤ 0`) if  the steering wheel angle is equal to or less than n x 1,5 degrees, and greater than (n-1) x 1,5 degrees, 
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      turning clockwise (i.e. to the right),
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 - `n` (`n ≥ 1` and `n < 511`) if the steering wheel angle is equal to or less than n x 0,1 degrees, and greater than (n-1) x 0,1 degrees, 
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      turning counter-clockwise (i.e. to the left),
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 - `511` if the steering wheel angle is greater than 510 x 1,5 degrees = 765 degrees to the left,
 - `512` if information is not available.
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Values:
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* **negativeOutOfRange** (-511)<br>
* **positiveOutOfRange** (511)<br>
* **unavailable** (512)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _1,5 degree_
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1 (meaning of value 511 has changed slightly)._
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```asn1
SteeringWheelAngleValue ::= INTEGER { 
    negativeOutOfRange (-511),
    positiveOutOfRange (511),
    unavailable        (512)
} (-511..512)
```

### <a name="SubCauseCodeType"></a>SubCauseCodeType
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This DE indicates the generic sub cause of a detected event.
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in V2.1.1 (this is  the generic sub cause type)_
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NOTE:&emsp;The sub cause code value assignment varies based on value of [**CauseCode**](#CauseCode).
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>>>
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```asn1
SubCauseCodeType ::= INTEGER (0..255)
```

### <a name="Temperature"></a>Temperature
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This DE indicates a temperature value.
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 The value shall be set to:
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 - `-60` for temperature equal to or less than -60 degrees C,
 - `n` (`n > -60` and `n < 67`) for the actual temperature n in degrees C,
 - `67` for temperature equal to or greater than 67 degrees C.
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Values:
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* **equalOrSmallerThanMinus60Deg** (-60)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _degrees Celsius_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Editorial update in V2.1.1_
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```asn1
Temperature ::= INTEGER {
    equalOrSmallerThanMinus60Deg (-60), 
    equalOrGreaterThan67Deg(67)} (-60..67)
```

### <a name="TimestampIts"></a>TimestampIts
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This DE represents the number of elapsed (TAI) milliseconds since the ITS Epoch. 
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 The ITS epoch is `00:00:00.000 UTC, 1 January 2004`.
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 "Elapsed" means that the true number of milliseconds is continuously counted without interruption,
  i.e. it is not altered by leap seconds, which occur in UTC.

 
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 EXAMPLE: The value for TimestampIts for 1 January 2007 00:00:00.000 UTC is `94 694 401 000` milliseconds,
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 which includes one leap second insertion since the ITS epoch.

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&nbsp;&nbsp;&nbsp;&nbsp;**Unit:** _0,001 s_
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Basic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Description revised in in V2.1.1_
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NOTE:&emsp;International Atomic Time (TAI) is the time reference coordinate on the basis of the readings of atomic clocks, 
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 operated in accordance with the definition of the second, the unit of time of the International System of Units. 
 TAI is a continuous time scale. UTC has discontinuities, as it is occasionally adjusted by leap seconds. 
 As of 1 January, 2022, TimestampIts is 5 seconds ahead of UTC, because since the ITS epoch on 1 January 2004 00:00:00.000 UTC, 
 further 5 leap seconds have been inserted in UTC.
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```asn1
TimestampIts ::= INTEGER (0..4398046511103)
```

### <a name="TrafficConditionSubCauseCode"></a>TrafficConditionSubCauseCode
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This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `trafficCondition`. 
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 The value shall be set to:
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 - 0 `unavailable`                  - in case further detailed information on the traffic condition is unavailable,
 - 1 `increasedVolumeOfTraffic`     - in case the type of traffic condition is increased traffic volume,
 - 2 `trafficJamSlowlyIncreasing`   - in case the type of traffic condition is a traffic jam which volume is increasing slowly,
 - 3 `trafficJamIncreasing`         - in case the type of traffic condition is a traffic jam which volume is increasing,
 - 4 `trafficJamStronglyIncreasing` - in case the type of traffic condition is a traffic jam which volume is strongly increasing,
 - 5 `trafficJam`         `         - in case the type of traffic condition is a traffic jam and no further detailed information about its volume is available,
 - 6 `trafficJamSlightlyDecreasing` - in case the type of traffic condition is a traffic jam which volume is decreasing slowly,
 - 7 `trafficJamDecreasing`         - in case the type of traffic condition is a traffic jam which volume is decreasing,
 - 8 `trafficJamStronglyDecreasing` - in case the type of traffic condition is a traffic jam which volume is decreasing rapidly,
 - 9 `trafficJamStable`             - in case the traffic condition is a traffic jam with stable volume,
 - 10-255: reserved for future usage.
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Values:
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* **unavailable** (0)<br>
* **increasedVolumeOfTraffic** (1)<br>
* **trafficJamSlowlyIncreasing** (2)<br>
* **trafficJamIncreasing** (3)<br>
* **trafficJamStronglyIncreasing** (4)<br>
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* **trafficJam** (5)<br>
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* **trafficJamSlightlyDecreasing** (6)<br>
* **trafficJamDecreasing** (7)<br>
* **trafficJamStronglyDecreasing** (8)<br>
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* **trafficJamStable** (9)<br>
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1, definition of value 0 and 1 changed in V2.2.1, name and definition of value 5 changed in V2.2.1, value 9 added in V2.2.1_
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```asn1
TrafficConditionSubCauseCode ::= INTEGER {
    unavailable                  (0),
    increasedVolumeOfTraffic     (1),
    trafficJamSlowlyIncreasing   (2),
    trafficJamIncreasing         (3),
    trafficJamStronglyIncreasing (4),
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    trafficJam                   (5),
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    trafficJamSlightlyDecreasing (6),
    trafficJamDecreasing         (7),
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    trafficJamStronglyDecreasing (8),
    trafficJamStable             (9)
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} (0..255)
```

### <a name="TrafficDirection"></a>TrafficDirection
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This DE indicates a direction of traffic with respect to a reference direction, and a portion of that traffic with respect to a reference position.
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 The value shall be set to:
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 - 0 `allTrafficDirections`                                    - for all directions of traffic, 
 - 1 `sameAsReferenceDirection-upstreamOfReferencePosition`    - for the direction of traffic according to the reference direction, and the portion of traffic upstream of the reference position, 
 - 2 `sameAsReferenceDirection-downstreamOfReferencePosition`  - for the direction of traffic according to the reference direction, and the portion of traffic downstream of the reference position, 
 - 3 `oppositeToReferenceDirection`                            - for the direction of traffic opposite to the reference direction.
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** GeoReference information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1 from RelevanceTrafficDirection, description and naming of values changed in V2.2.1_
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NOTE:&emsp;Upstream traffic corresponds to the incoming traffic towards the event position, and downstream traffic to the departing traffic away from the event position.
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>>>
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```asn1
TrafficDirection ::= ENUMERATED {
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    allTrafficDirections(0), 
    sameAsReferenceDirection-upstreamOfReferencePosition(1), 
    sameAsReferenceDirection-downstreamOfReferencePosition(2), 
    oppositeToReferenceDirection(3)
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### <a name="TrafficParticipantType"></a>TrafficParticipantType
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This DE represents the type of a traffic participant.
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 The value shall be set to:
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 - 0 `unknown`          - information about traffic participant is not provided,
 - 1 `pedestrian`       - human being not using a mechanical device for their trip (VRU profile 1),
 - 2 `cyclist`          - non-motorized unicycles, bicycles , tricycles, quadracycles (VRU profile 2),
 - 3 `moped`            - light motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class L1, L2 (VRU Profile 3),
 - 4 `motorcycles`      - motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class L3, L4, L5, L6, L7 (VRU Profile 3),
 - 5 `passengerCar`     - small passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class M1,
 - 6 `bus`              - large passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class M2, M3,
 - 7 `lightTruck`       - light Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class N1,
 - 8 `heavyTruck`       - Heavy Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class N2 and N3,
 - 9 `trailer`          - unpowered vehicle that is intended to be towed by a powered vehicle as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class O,
 - 10 `specialVehicles` - vehicles which have special purposes other than the above (e.g. moving road works vehicle),
 - 11 `tram`            - vehicle which runs on tracks along public streets,
 - 12 `lightVruVehicle` - human being traveling on light vehicle, incl. possible use of roller skates or skateboards (VRU profile 2),
 - 13 `animal`          - animal presenting a safety risk to other road users e.g. domesticated dog in a city or horse (VRU Profile 4),
 - 14 `agricultural`    - agricultural and forestry vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [[16]](#references) class T,
 - 15 `roadSideUnit`    - infrastructure typically positioned outside of the drivable roadway (e.g. on a gantry, on a pole, 
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                            on a stationary road works trailer); the infrastructure is static during the entire operation period of the ITS-S (e.g. no stop and go activity),
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 - 16-255               - are reserved for future usage.
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Values:
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* **unknown** (0)<br>
* **pedestrian** (1)<br>
* **cyclist** (2)<br>
* **moped** (3)<br>
* **motorcycle** (4)<br>
* **passengerCar** (5)<br>
* **bus** (6)<br>
* **lightTruck** (7)<br>
* **heavyTruck** (8)<br>
* **trailer** (9)<br>
* **specialVehicle** (10)<br>
* **tram** (11)<br>
* **lightVruVehicle** (12)<br>
* **animal** (13)<br>
* **agricultural** (14)<br>
* **roadSideUnit** (15)<br>

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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Communication information. 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Created in V2.1.1 based on StationType_
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```asn1
TrafficParticipantType ::= INTEGER {
    unknown         (0), 
    pedestrian      (1), 
    cyclist         (2), 
    moped           (3), 
    motorcycle      (4), 
    passengerCar    (5), 
    bus             (6), 
    lightTruck      (7), 
    heavyTruck      (8), 
    trailer         (9), 
    specialVehicle  (10), 
    tram            (11), 
    lightVruVehicle (12), 
    animal          (13),
    agricultural    (14), 
    roadSideUnit    (15)
} (0..255)
```

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### <a name="TrafficRule"></a>TrafficRule
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This DE indicates traffic rules that apply to vehicles at a certain position.
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 The value shall be set to:
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 - `0` - if overtaking is prohibited for all vehicles,
 - `1` - if overtaking is prohibited for trucks,
 - `2` - if vehicles should pass to the right lane,
 - `3` - if vehicles should pass to the left lane.
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 - `4` - if vehicles should pass to the left or right lane.
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Values:
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* **noPassing** (0)<br>
* **noPassingForTrucks** (1)<br>
* **passToRight** (2)<br>
* **passToLeft** (3)<br>
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* **passToLeftOrRight** (4)<br>
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Infrastructure information Traffic information 
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&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _Editorial update in V2.1.1_
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```asn1
TrafficRule ::= ENUMERATED {
    noPassing          (0), 
    noPassingForTrucks (1), 
    passToRight        (2), 
    passToLeft         (3), 
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    ...,
    passToLeftOrRight   (4)
}
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### <a name="TrailerPresenceInformation"></a>TrailerPresenceInformation
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This DE provides information about the presence of a trailer. 
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 The value shall be set to:
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 - 0 `noTrailerPresent`                - to indicate that no trailer is present, i.e. either the vehicle is physically not enabled to tow a trailer or it has been detected that no trailer is present.
 - 1 `trailerPresentWithKnownLength`   - to indicate that a trailer has been detected as present and the length is included in the vehicle length value.
 - 2 `trailerPresentWithUnknownLength` - to indicate that a trailer has been detected as present and the length is not included in the vehicle length value.
 - 3 `trailerPresenceIsUnknown`        - to indicate that information about the trailer presence is unknown, i.e. the vehicle is physically enabled to tow a trailer but the detection of trailer presence/absence is not possible.
 - 4 `unavailable`                     - to indicate that the information about the presence of a trailer is not available, i.e. it is neither known whether the vehicle is able to tow a trailer 
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                                         nor the detection of trailer presence/absence is possible.