ETSI-ITS-CDD.md

  definition of an area of circular shape or a right circular cylinder.


   
* polygonal [**PolygonalShape**](#PolygonalShape) <br>
  definition of an area of polygonal shape or a right prism.


    
* elliptical [**EllipticalShape**](#EllipticalShape) <br>
  definition of an area of elliptical shape or a right elliptical cylinder.


   
* radial [**RadialShape**](#RadialShape) <br>
  definition of a radial shape.


   
* radialShapes [**RadialShapes**](#RadialShapes) <br>
   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: GeoReference information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
Shape::= CHOICE {
   rectangular       RectangularShape,
   circular          CircularShape, 
   polygonal         PolygonalShape,
   elliptical        EllipticalShape,
   radial            RadialShape,
   radialShapes      RadialShapes,
   ...
}
```

### <a name="Speed"></a>Speed
 This DF represents the speed and associated confidence value.

 It shall include the following components:

Fields:
* speedValue [**SpeedValue**](#SpeedValue) <br>
  the speed value.


* speedConfidence [**SpeedConfidence**](#SpeedConfidence) <br>
  the confidence value of the speed value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
Speed ::= SEQUENCE {
    speedValue         SpeedValue,
    speedConfidence    SpeedConfidence
}
```

### <a name="StabilityChangeIndication"></a>StabilityChangeIndication
 This DF  provides the  indication of  change in stability.

 It shall include the following components:

Fields:
* lossProbability [**StabilityLossProbability**](#StabilityLossProbability) <br>
  the probability of stability loss. 


* actionDeltaTime [**DeltaTimeTenthOfSecond**](#DeltaTimeTenthOfSecond) <br>
  the period over which the the probability of stability loss is estimated. 


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V2.1.1_
```asn1
StabilityChangeIndication ::= SEQUENCE {
    lossProbability     StabilityLossProbability,
    actionDeltaTime     DeltaTimeTenthOfSecond,
    ...
}
```

### <a name="SteeringWheelAngle"></a>SteeringWheelAngle
 This DF represents the steering wheel angle of the vehicle at certain point in time.

 It shall include the following components:

Fields:
* steeringWheelAngleValue [**SteeringWheelAngleValue**](#SteeringWheelAngleValue) <br>
  steering wheel angle value.


* steeringWheelAngleConfidence [**SteeringWheelAngleConfidence**](#SteeringWheelAngleConfidence) <br>
  confidence value of the steering wheel angle value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
SteeringWheelAngle ::= SEQUENCE {
    steeringWheelAngleValue         SteeringWheelAngleValue,
    steeringWheelAngleConfidence    SteeringWheelAngleConfidence
}
```


### <a name="Traces"></a>Traces
 This DF represents one or more paths using [**PathHistory**](#PathHistory).
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: GeoReference information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1. Is is now based on Path and not on PathHistory_
```asn1
Traces ::= SEQUENCE SIZE(1..7) OF Path
```

### <a name="TrafficIslandPosition"></a>TrafficIslandPosition
 Ths DF represents the a position on a traffic island between two lanes. 

 It shall include the following components:

Fields:
* oneSide [**LanePositionAndType**](#LanePositionAndType) <br>
  represents one lane.


* otherSide [**LanePositionAndType**](#LanePositionAndType) <br>
  represents the other lane.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Road Topology information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TrafficIslandPosition ::= SEQUENCE {
    oneSide      LanePositionAndType,
    otherSide    LanePositionAndType,
    ...
}
```

### <a name="TrailerData"></a>TrailerData
 This DF provides detailed information about an attached trailer.

 It shall include the following components:

Fields:
* refPointId [**Identifier1B**](#Identifier1B) <br>
  identifier of the reference point of the trailer.


* hitchPointOffset [**StandardLength1B**](#StandardLength1B) <br>
  optional position of the hitch point in negative x-direction (according to ISO 8855) from the
   vehicle Reference Point.


   
* frontOverhang [**StandardLength1B**](#StandardLength1B)  OPTIONAL<br>
  optional length of the trailer overhang in the positive x direction (according to ISO 8855) from the
   trailer Reference Point indicated by the refPointID. The value defaults to 0 in case the trailer
   is not overhanging to the front with respect to the trailer reference point.


    
* rearOverhang [**StandardLength1B**](#StandardLength1B)  OPTIONAL<br>
  optional length of the trailer overhang in the negative x direction (according to ISO 8855) from the
   trailer Reference Point indicated by the refPointID.


    
* trailerWidth [**VehicleWidth**](#VehicleWidth)  OPTIONAL<br>
  optional width of the trailer.


    
* hitchAngle [**CartesianAngle**](#CartesianAngle) <br>
  optional Value and confidence value of the angle between the trailer orientation (corresponding to the x
   direction of the ISO 8855 [2] coordinate system centered on the trailer) and the direction of
   the segment having as end points the reference point of the trailer and the reference point of
   the pulling vehicle, which can be another trailer or a vehicle looking on the horizontal plane
   xy, described in the local Cartesian coordinate system of the trailer. The
   angle is measured with negative values considering the trailer orientation turning clockwise
   starting from the segment direction. The angle value accuracy is provided with the
   confidence level of 95 %.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TrailerData ::= SEQUENCE { 
    refPointId          Identifier1B,
    hitchPointOffset    StandardLength1B, 
    frontOverhang       StandardLength1B OPTIONAL, 
    rearOverhang        StandardLength1B OPTIONAL, 
    trailerWidth        VehicleWidth OPTIONAL,
    hitchAngle          CartesianAngle,
    ...
}
```

### <a name="TrajectoryInterceptionIndication"></a>TrajectoryInterceptionIndication
 This DF  provides the trajectory  interception  indication  of  ego-VRU  ITS-S  with another ITS-Ss. 

 It shall include the following components:

Fields:
* subjectStation [**StationId**](#StationId)  OPTIONAL<br>
  indicates the subject station.


* trajectoryInterceptionProbability [**TrajectoryInterceptionProbability**](#TrajectoryInterceptionProbability) <br>
  indicates the propbability of the interception of the subject station trajectory 
   with the trajectory of the station indicated in the component subjectStation.


    
* trajectoryInterceptionConfidence [**TrajectoryInterceptionConfidence**](#TrajectoryInterceptionConfidence)  OPTIONAL<br>
  indicates the confidence of interception of the subject station trajectory 
   with the trajectory of the station indicated in the component subjectStation.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TrajectoryInterceptionIndication  ::= SEQUENCE {
   subjectStation                     StationId OPTIONAL, 
   trajectoryInterceptionProbability  TrajectoryInterceptionProbability,
   trajectoryInterceptionConfidence   TrajectoryInterceptionConfidence OPTIONAL,
        ... 
}
```


### <a name="VarLengthNumber"></a>VarLengthNumber
 This DF together with its sub DFs Ext1, Ext2 and the DE Ext3 provides the custom (i.e. not ASN.1 standard) definition of an integer with variable lenght, that can be used for example to encode the ITS-AID. 
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
VarLengthNumber::=CHOICE{
	content	    [0] INTEGER(0..127), 
	extension	[1]	Ext1
	}
Ext1::=CHOICE{
	content	    [0]	INTEGER(128..16511), 
	extension	[1]	Ext2
}
Ext2::=CHOICE{
	content	    [0]	INTEGER(16512..2113663), 
	extension	[1]	Ext3
	}
Ext3::= INTEGER(2113664..270549119,...) 
```

### <a name="VerticalAcceleration"></a>VerticalAcceleration
 This DF indicates the vehicle acceleration at vertical direction and the associated confidence value.

 It shall include the following components:

Fields:
* verticalAccelerationValue [**VerticalAccelerationValue**](#VerticalAccelerationValue) <br>
  vertical acceleration value at a point in time.


* verticalAccelerationConfidence [**AccelerationConfidence**](#AccelerationConfidence) <br>
  confidence value of the vertical acceleration value with a predefined confidence level.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1_

>>>
NOTE: this DF is kept for backwards compatibility reasons only. It is recommended to use [**Acceleration1d**](#Acceleration1d) instead
>>>
```asn1
VerticalAcceleration ::= SEQUENCE {
    verticalAccelerationValue         VerticalAccelerationValue,
    verticalAccelerationConfidence    AccelerationConfidence
}
```

### <a name="VehicleIdentification"></a>VehicleIdentification
 This DF provides information related to the identification of a vehicle.

 It shall include the following components:

Fields:
* wMInumber [**WMInumber**](#WMInumber)  OPTIONAL<br>
  World Manufacturer Identifier (WMI) code.


* vDS [**VDS**](#VDS)  OPTIONAL<br>
  Vehicle Descriptor Section (VDS). 


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
VehicleIdentification ::= SEQUENCE {
    wMInumber    WMInumber OPTIONAL,
    vDS          VDS OPTIONAL,
    ...
}
```

### <a name="VehicleLength"></a>VehicleLength
 This DF represents the length of vehicle and accuracy indication information.

 It shall include the following components:

Fields:
* vehicleLengthValue [**VehicleLengthValue**](#VehicleLengthValue) <br>
  length of vehicle. 


* vehicleLengthConfidenceIndication [**VehicleLengthConfidenceIndication**](#VehicleLengthConfidenceIndication) <br>
  indication of the length value confidence.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
VehicleLength ::= SEQUENCE {
    vehicleLengthValue                   VehicleLengthValue,
    vehicleLengthConfidenceIndication    VehicleLengthConfidenceIndication
}
```

### <a name="VehicleLengthV2"></a>VehicleLengthV2
 This DF represents the length of vehicle and accuracy indication information.

 It shall include the following components:

Fields:
* vehicleLengthValue [**VehicleLengthValue**](#VehicleLengthValue) <br>
  length of vehicle. 


* trailerPresenceInformation [**TrailerPresenceInformation**](#TrailerPresenceInformation) <br>
  information about the trailer presence.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _created in V2.1.1 based on @ref VehicleLength but using @ref TrailerPresenceInformation_
```asn1
VehicleLengthV2 ::= SEQUENCE {
    vehicleLengthValue            VehicleLengthValue,
    trailerPresenceInformation    TrailerPresenceInformation
}
```

### <a name="Velocity3dWithConfidence"></a>Velocity3dWithConfidence
 This DF represents a velocity vector with associated confidence value.

 The following options are available:

Fields:
* polarVelocity [**VelocityPolarWithZ**](#VelocityPolarWithZ) <br>
  the representation of the velocity vector in a polar coordinate system. 


* cartesianVelocity [**VelocityCartesian**](#VelocityCartesian) <br>
  the representation of the velocity vector in a cartesian coordinate system.


    

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
Velocity3dWithConfidence::= CHOICE{
    polarVelocity          VelocityPolarWithZ, 
    cartesianVelocity      VelocityCartesian
}
```

### <a name="VelocityCartesian"></a>VelocityCartesian
 This DF represents a velocity vector in a cartesian coordinate system.
 It shall include the following components:

Fields:
* xVelocity [**VelocityComponent**](#VelocityComponent) <br>
  the x component of the velocity vector with the associated confidence value.


* yVelocity [**VelocityComponent**](#VelocityComponent) <br>
  the y component of the velocity vector with the associated confidence value.


   
* zVelocity [**VelocityComponent**](#VelocityComponent)  OPTIONAL<br>
  the optional z component of the velocity vector with the associated confidence value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
VelocityCartesian::= SEQUENCE {
    xVelocity   VelocityComponent,
    yVelocity   VelocityComponent,
    zVelocity   VelocityComponent OPTIONAL
}
```

### <a name="VelocityComponent"></a>VelocityComponent
 This DF represents a component of the velocity vector and the associated confidence value.

 It shall include the following components:

Fields:
* value [**VelocityComponentValue**](#VelocityComponentValue) <br>
  the value of the component.


* confidence [**SpeedConfidence**](#SpeedConfidence) <br>
  the confidence value of the value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V2.1.1_
```asn1
VelocityComponent ::= SEQUENCE {
    value         VelocityComponentValue,
    confidence    SpeedConfidence
}
```

### <a name="VelocityPolarWithZ"></a>VelocityPolarWithZ
 This DF represents a velocity vector in a polar coordinate system.
 It shall include the following components:

Fields:
* velocityMagnitude [**Speed**](#Speed) <br>
  magnitude of the velocity vector of the detected object in the X-Y plane with the associated confidence value.


* velocityDirection [**CartesianAngle**](#CartesianAngle) <br>
  polar angle of the velocity vector of the detected object in the X-Y plane with the associated confidence value.


    
* zVelocity [**VelocityComponent**](#VelocityComponent)  OPTIONAL<br>
  the optional z component of the velocity vector with the associated confidence value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
VelocityPolarWithZ::= SEQUENCE {
    velocityMagnitude    Speed, 
    velocityDirection    CartesianAngle,
    zVelocity            VelocityComponent OPTIONAL
}
```

### <a name="VruClusterInformation"></a>VruClusterInformation
 This DF provides information about a VRU cluster.

 It shall include the following components:

Fields:
* clusterId [**Identifier1B**](#Identifier1B)  OPTIONAL<br>
  optional identifier of a VRU cluster .


* clusterBoundingBoxShape [**Shape**](#Shape)  (WITH COMPONENTS{..., elliptical ABSENT, radial ABSENT, radialShapes ABSENT}) OPTIONAL<br>
  optionally indicates the shape of the cluster bounding box.


   
* clusterCardinalitySize [**CardinalNumber1B**](#CardinalNumber1B) <br>
  indicates an estimation of the number of VRUs in the group, i.e. the known members in the cluster + 1 (for the cluster leader) .


   
* clusterProfiles [**VruClusterProfiles**](#VruClusterProfiles)  OPTIONAL<br>
  optionally identifies all the VRU profile types that are known to be within the cluster.
   if this component is absent it means that the information is unavailable. 


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: VRU information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
VruClusterInformation ::= SEQUENCE { 
   clusterId                  Identifier1B OPTIONAL,
   clusterBoundingBoxShape    Shape (WITH COMPONENTS{..., elliptical ABSENT, radial ABSENT, radialShapes ABSENT}) OPTIONAL,
   clusterCardinalitySize     CardinalNumber1B,
   clusterProfiles            VruClusterProfiles OPTIONAL,
   ...
}
```

### <a name="VruExteriorLights"></a>VruExteriorLights
 This DF represents the status of the exterior light switches of a VRU.
 This DF is an extension of the vehicular DE [**ExteriorLights**](#ExteriorLights).

 It shall include the following components:

Fields:
* vehicular [**ExteriorLights**](#ExteriorLights) <br>
  represents the status of the exterior light switches of a road vehicle.


* vruSpecific [**VruSpecificExteriorLights**](#VruSpecificExteriorLights) <br>
  represents the status of the exterior light switches of a VRU.


    

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: VRU information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _created in V2.1.1_
```asn1
VruExteriorLights ::= SEQUENCE {
   vehicular      ExteriorLights, 
   vruSpecific    VruSpecificExteriorLights,
   ...
}
```

### <a name="VruProfileAndSubprofile"></a>VruProfileAndSubprofile
 This DF indicates the profile of a VRU including sub-profile information
 It identifies four options corresponding to the four types of VRU profiles specified in ETSI TS 103 300-2 [i.18]:

Fields:
* pedestrian [**VruSubProfilePedestrian**](#VruSubProfilePedestrian) <br>
  VRU Profile 1 - Pedestrian.


* bicyclistAndLightVruVehicle [**VruSubProfileBicyclist**](#VruSubProfileBicyclist) <br>
  VRU Profile  2 - Bicyclist.


   
* motorcyclist [**VruSubProfileMotorcyclist**](#VruSubProfileMotorcyclist) <br>
  VRU Profile 3  - Motorcyclist.


   
* animal [**VruSubProfileAnimal**](#VruSubProfileAnimal) <br>
  VRU Profile  4 -  Animal.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: VRU information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
VruProfileAndSubprofile ::= CHOICE {
   pedestrian                     VruSubProfilePedestrian,
   bicyclistAndLightVruVehicle    VruSubProfileBicyclist,
   motorcyclist                   VruSubProfileMotorcyclist,
   animal                         VruSubProfileAnimal,
   ...
}
```

### <a name="Wgs84Angle"></a>Wgs84Angle
 This DF represents an angular component along with a confidence value in the WGS84 coordinate system.
 The specific WGS84 coordinate system is specified by the corresponding standards applying this DE.

 It shall include the following components:

Fields:
* value [**Wgs84AngleValue**](#Wgs84AngleValue) <br>
  the angle value, which can be estimated as the mean of the current distribution.


* confidence [**Wgs84AngleConfidence**](#Wgs84AngleConfidence) <br>
  the confidence value associated to the angle value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: GeoReference information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
Wgs84Angle ::= SEQUENCE {
    value         Wgs84AngleValue,
    confidence    Wgs84AngleConfidence
}
```

### <a name="YawRate"></a>YawRate
 This DF represents a yaw rate of vehicle at a point in time.

 It shall include the following components:

Fields:
* yawRateValue [**YawRateValue**](#YawRateValue) <br>
  yaw rate value at a point in time.


* yawRateConfidence [**YawRateConfidence**](#YawRateConfidence) <br>
  confidence value associated to the yaw rate value.


   

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Vehicle Information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
YawRate::= SEQUENCE {
    yawRateValue         YawRateValue,
    yawRateConfidence    YawRateConfidence
}
```