ETSI-ITS-CDD.md

### <a name="Shape"></a>Shape
This DF provides the definition of a geographical area or volume, based on different options.

 It is a choice of the following components:

* _rectangular_ of type [**RectangularShape**](#RectangularShape) <br>
  definition of an rectangular area or a right rectangular prism (with a rectangular base) also called a cuboid, or informally a rectangular box.

* _circular_ of type [**CircularShape**](#CircularShape) <br>
  definition of an area of circular shape or a right circular cylinder.

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

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

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

* _radialShapes_ of type [**RadialShapes**](#RadialShapes) <br>
* radialList<br>
  definition of list of radial shapes.


&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:

* _speedValue_ of type [**SpeedValue**](#SpeedValue) <br>
  the speed value.

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


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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:

* _lossProbability_ of type [**StabilityLossProbability**](#StabilityLossProbability) <br>
  the probability of stability loss. 

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


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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:

* _steeringWheelAngleValue_ of type [**SteeringWheelAngleValue**](#SteeringWheelAngleValue) <br>
  steering wheel angle value.

* _steeringWheelAngleConfidence_ of type [**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:

* _oneSide_ of type [**LanePositionAndType**](#LanePositionAndType) <br>
  represents one lane.

* _otherSide_ of type [**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:

* _refPointId_ of type [**Identifier1B**](#Identifier1B) <br>
  identifier of the reference point of the trailer.

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

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

* _hitchAngle_ of type [**CartesianAngle**](#CartesianAngle) <br>
  optional Value and confidence value of the angle between the trailer orientation (corresponding to the x
   direction of the ISO 8855 [[21]](#references) 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:

* _subjectStation_ of type [**StationId**](#StationId)  OPTIONAL<br>
  indicates the subject station.

* _trajectoryInterceptionProbability_ of type [**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_ of type [**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.

* **content** [0] INTEGER(0..127)<br>
* **extension** [1]	Ext1<br>
    -- one octet length

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

* _verticalAccelerationValue_ of type [**VerticalAccelerationValue**](#VerticalAccelerationValue) <br>
  vertical acceleration value at a point in time.

* _verticalAccelerationConfidence_ of type [**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:&emsp;this DF is kept for backwards compatibility reasons only. It is recommended to use [**AccelerationComponent**](#AccelerationComponent) 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:

* _wMInumber_ of type [**WMInumber**](#WMInumber)  OPTIONAL<br>
  World Manufacturer Identifier (WMI) code.

* _vDS_ of type [**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:

* _vehicleLengthValue_ of type [**VehicleLengthValue**](#VehicleLengthValue) <br>
  length of vehicle. 

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


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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision:** _V1.3.1_

>>>
NOTE:&emsp;this DF is kept for backwards compatibility reasons only. It is recommended to use [**VehicleLengthV2**](#VehicleLengthV2) instead.
>>>
```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:

* _vehicleLengthValue_ of type [**VehicleLengthValue**](#VehicleLengthValue) <br>
  length of vehicle. 

* _trailerPresenceInformation_ of type [**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 [**VehicleLength**](#VehicleLength) but using [**TrailerPresenceInformation**](#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:

* _polarVelocity_ of type [**VelocityPolarWithZ**](#VelocityPolarWithZ) <br>
  the representation of the velocity vector in a polar or cylindrical coordinate system. 

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


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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:

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

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

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


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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:

* _value_ of type [**VelocityComponentValue**](#VelocityComponentValue) <br>
  the value of the component.

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


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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 or cylindrical coordinate system.

 It shall include the following components:

* _velocityMagnitude_ of type [**Speed**](#Speed) <br>
  magnitude of the velocity vector on the reference plane, with the associated confidence value.

* _velocityDirection_ of type [**CartesianAngle**](#CartesianAngle) <br>
  polar angle of the velocity vector on the reference plane, with the associated confidence value.

* _zVelocity_ of type [**VelocityComponent**](#VelocityComponent)  OPTIONAL<br>
  the optional z component of the velocity vector along the reference axis of the cylindrical coordinate system, with the associated confidence value.


&nbsp;&nbsp;&nbsp;&nbsp;**Categories:** Kinematic 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:

* _clusterId_ of type [**Identifier1B**](#Identifier1B)  OPTIONAL<br>
  optional identifier of a VRU cluster .

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

* _clusterCardinalitySize_ of type [**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_ of type [**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:

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

* _vruSpecific_ of type [**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 [[18]](#references):

* _pedestrian_ of type [**VruSubProfilePedestrian**](#VruSubProfilePedestrian) <br>
  VRU Profile 1 - Pedestrian.

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

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

* _animal_ of type [**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:

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

* _confidence_ of type [**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:

* _yawRateValue_ of type [**YawRateValue**](#YawRateValue) <br>
  yaw rate value at a point in time.

* _yawRateConfidence_ of type [**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
}
```



## References:
 1.   ETSI TS 103 900: "Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 2: Specification of Cooperative Awareness Basic Service; Release 2".
 2.   ETSI TS 103 831: "Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 3: Specifications of Decentralized Environmental Notification Basic Service"; Release 2.
 3.   [European Agreement (Applicable as from 1 January 2011): "Concerning the International Carriage of Dangerous Goods by Road"](http://www.unece.org/trans/danger/publi/adr/adr2011/11ContentsE.html).
 4.   [United Nations: "Recommendations on the Transport of Dangerous Goods - Model Regulations", Twelfth revised edition](http://www.unece.org/trans/danger/publi/unrec/12_e.html).
 5.   ETSI TS 101 539-1: "Intelligent Transport Systems (ITS); V2X Applications; Part 1: Road Hazard Signalling (RHS) application requirements specification".
 6.   ISO 3779 (2011-07): "Road vehicles - Vehicle identification number (VIN) Content and structure".
 7.   VDV recommendation 420 (1992): "Technical Requirements for Automatic Vehicle Location / Control Systems - Radio Data Transmission (BON Version) with Supplement 1 and Supplement 2".
 8.   ISO 1176:1990: "Road vehicles - Masses - Vocabulary and codes".
 9.   ETSI TS 101 556-1: "Intelligent Transport Systems (ITS); Infrastructure to Vehicle Communication; Electric Vehicle Charging Spot Notification Specification".
 10.  ETSI TS 101 556-2: "Intelligent Transport Systems (ITS); Infrastructure to Vehicle Communication; Part 2: Communication system specification to support application requirements for Tyre Information System (TIS) and Tyre Pressure Gauge (TPG) interoperability".
 11.  ETSI TS 101 556-3: "Intelligent Transport Systems (ITS); Infrastructure to Vehicle Communications; Part 3: Communications system for the planning and reservation of EV energy supply using wireless networks".
 12.  ETSI TS 103 300-3: "Intelligent Transport Systems (ITS);  Vulnerable Road Users (VRU) awareness;  Part 3: Specification of VRU awareness basic service; Release 2"
 13.  ETSI TS 103 724: "Intelligent Transport Systems (ITS); Facilities layer  function; Interference Management Zone Message (IMZM); Release 2"
 14.	ETSI TS 102 792: "Intelligent Transport Systems (ITS); Mitigation techniques to avoid interference between European CEN Dedicated Short Range Communication (CEN DSRC) equipment and Intelligent Transport Systems (ITS) operating in the 5 GHz frequency range".
 15.	ETSI TS 103 301: "Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Facilities layer protocols and communication requirements for infrastructure services; Release 2".
 16.	UNECE/TRANS/WP.29/78/Rev.4: "Consolidated Resolution on the Construction of Vehicles (R.E.3)".
 17.	ETSI EN 302 890-1: "Intelligent Transport Systems (ITS); Facilities layer function; Part 1: Services Announcement (SA) specification".
 18.	ETSI TS 103 300-2 "Intelligent Transport System (ITS); Vulnerable Road Users (VRU) awareness; Part 2: Functional  Architecture and Requirements definition; Release 2"
 19.	ETSI TS 103 175  "Intelligent Transport Systems (ITS); Cross  Layer DCC Management  Entity for operation in  the ITS G5A  and ITS G5B medium"
 20.	ETSI EN 302 571  "Intelligent Transport Systems (ITS); Radiocommunications equipment operating in the 5 855 MHz to 5 925 MHz frequency  band; Harmonised Standard  covering  the essential  requirements of article 3.2 of  Directive 2014/53/EU"
 21.	ISO 8855: "Road vehicles - Vehicle dynamics and road-holding ability - Vocabulary".
 22.  ISO 3833, "Road vehicles - Types - Terms and definitions".