ETSI-ITS-CDD.md

    **Revision**: _Description revised in V2.1.1_

>>>
NOTE: in practice this means that the position is counted from "inside" to "outside" no matter which traffic practice is used.
>>>
```asn1
LanePosition ::= INTEGER {
    offTheRoad           (-1), 
    innerHardShoulder    (0), 
    outerHardShoulder    (14) 
} (-1..14)
```


### <a name="LaneType"></a>LaneType
 This DE represents the type of a lane. 
 
 The value shall be set to:
 - 0	- `traffic`            - Lane dedicated to the movement of vehicles.
 - 1	- `through`            - Lane dedicated to the movement of vehicles travelling ahead and not turning.
 - 2	- `reversible`         - Lane where the direction of traffic can be changed to match the peak flow.
 - 3	- `acceleration`	   - Lane that allows vehicles entering a road to accelerate to the speed of through traffic before merging with it.
 - 4	- `deceleration`       - Lane that allows vehicles exiting a road to decelerate before leaving it.
 - 5	- `leftHandTurning`    - Lane reserved for slowing down and making a left turn, so as not to disrupt traffic.
 - 6	- `rightHandTurning`   - Lane reserved for slowing down and making a right turn so as not to disrupt traffic.
 - 7	- `dedicatedVehicle`   - Lane dedicated to movement of motor vehicles with specific characteristics, such as heavy goods vehicles, etc. 
 - 8	- `bus`                - Lane dedicated to movement of buses providing public transport.
 - 9	- `taxi`               - Lane dedicated to movement of taxis.
 - 10	- `hov`                - Carpooling lane or high occupancy vehicle lane.
 - 11	- `hot`                - High occupancy vehicle lanes that is allowed to be used without meeting the occupancy criteria by paying a toll.
 - 12	- `pedestrian`         - Lanes dedicated to pedestrians such as pedestrian sidewalk paths.
 - 13	- `cycleLane`	       - Lane dedicated to exclusive or preferred use by bicycles.
 - 14	- `median`             - Lane not dedicated to movement of vehicles but representing a median / central reservation  such as the central median 
                                 separating the two directional carriageways of the highway.
 - 15	- `striping`	       - Lane not dedicated to movement of vehicles but covered with roadway markings.
 - 16	- `trackedVehicle`     - Lane dedicated to movement of trains, trams and trolleys.
 - 17	- `parking`            - Lanes dedicated to vehicles parking, stopping and loading lanes.
 - 18	- `emergency`          - Lane dedicated to vehicles in breakdown or to emergency vehicles also called hard shoulder.
 - 19	- `verge`              - Lane representing the verge, i.e. a narrow strip of grass or plants and sometimes also trees located between 
                                 the road surface edge and the boundary of a road.
 - 20	`minimumRiskManoeuvre` - Lane dedicated to automated vehicles making a minimum risk manoeuvre.
 - values 21 to 30             reserved for future use 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V2.1.1_
```asn1
LaneType::= INTEGER{
	traffic              (0),
	through	             (1),
	reversible           (2),
	acceleration         (3),
	deceleration         (4),
	leftHandTurning      (5),
	rightHandTurning     (6),
	dedicatedVehicle     (7),
	bus                  (8),
	taxi                 (9),
	hov                  (10),
	hot                  (11),
	pedestrian           (12),
	cycleLane            (13),
	median               (14),   
	striping             (15),
	trackedVehicle       (16),
	parking	             (17),
	emergency            (18),
	verge                (19),
	minimumRiskManoeuvre (20),
	unknown              (31)
}(0..31)
```


### <a name="LaneWidth"></a>LaneWidth
 This DE represents the width of a lane measured at a defined position.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.01 meter_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
LaneWidth::= INTEGER (0..1023)
```


### <a name="Latitude"></a>Latitude
 This DE represents the absolute geographical latitude in a WGS84 coordinate system, providing a range of 90 degrees in north or
 in south hemisphere.

 The value shall be set to:
 - `n (n >= -900000000 and n < 0)`, i.e. negative values for latitudes south of the Equator.
 - `0` is used for the latitude of the equator.
 - `n (n > 0 and n < 900000001)`, i.e. positive values for latitudes north of the Equator.
 - `900 000 001` when the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.1 microdegree_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
Latitude ::= INTEGER {
    unavailable(900000001)
} (-900000000..900000001)
```


### <a name="LateralAccelerationValue"></a>LateralAccelerationValue
 This DE represents the vehicle acceleration at lateral direction in the centre of the mass of the empty vehicle.
 It corresponds to the vehicle coordinate system as specified in ISO 8855 [2].
 The value shall be set to:
 - `-160` for values equal to or less than -16 m/s<sup>2</sup>.
 - `n (n > -160 and n <= 0)` to indicate that the vehicle is accelerating towards the right side with regards to the vehicle orientation 
                            with acceleration equal to or less than n x 0,1 m/s<sup>2</sup>, and greater than (n-1) x 0,1 m/s<sup>2</sup>.
 - `n (n > 0 and n < 160)` to indicate that the vehicle is accelerating towards the left hand side with regards to the vehicle orientation 
						     with acceleration equal to or less than n x 0,1 m/s<sup>2</sup>, and greater than (n-1) x 0,1 m/s<sup>2</sup>.
 - `160` for acceleration or greater than 15,9 m/s<sup>2</sup>.
 - `161` when the data is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.1 m/s<sup>2</sup>_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description updated in V2.1.1 (the meaning of 160 has changed slightly). This type is now based on the more generic type AccelerationValue._

>>>
NOTE: this DF is kept forbackwards compatibility reasons only. It is recommended to use [**AccelerationValue**](#AccelerationValue) instead
>>>
```asn1
LateralAccelerationValue ::= AccelerationValue
```


### <a name="LightBarSirenInUse"></a>LightBarSirenInUse
 This DE indicates the status of light bar and any sort of audible alarm system besides the horn.
 This includes various common sirens as well as backup up beepers and other slow speed manoeuvring alerts.

 The corresponding bit shall be set to 1 under the following conditions:
 - 0 - `lightBarActivated`      - when the light bar is activated.
 - 1 - `sirenActivated`         - when the siren is activated.

 Otherwise, it shall be set to 0.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
LightBarSirenInUse ::= BIT STRING {
    lightBarActivated (0),
    sirenActivated    (1)
} (SIZE(2))
```


### <a name="Longitude"></a>Longitude
 This DE represents the absolute geographical longitude in a WGS84 coordinate system, providing a range of 180 degrees
 to the east or to the west of the prime meridian.

 The value shall be set to:
 - `n (n > -1800000000 and n < 0)`, i.e. negative values for longitudes to the west.
 - `0` to indicate the prime meridian. 
 - `n (n > 0 and n < 1800000001)`, i.e. positive values for longitudes to the east.
 - `1 800 000 001` when the information is unavailable.

 The value -1800000000 shall not be used. 
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.1 microdegree_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1_
```asn1
Longitude ::= INTEGER {
    valueNotUsed (-1800000000),
    unavailable  (1800000001)
} (-1800000000..1800000001)
```


### <a name="LongitudinalAccelerationValue"></a>LongitudinalAccelerationValue
 This DE represents the vehicle acceleration at longitudinal direction in the centre of the mass of the empty vehicle.
 It corresponds to the vehicle coordinate system as specified in ISO 8855 [2].

 The value shall be set to:
 - `-160` for values equal to or less than -16 m/s<sup>2</sup>.
 - `n (n > -160 and n <= 0)` to indicate that the vehicle is braking with acceleration equal to or less than n x 0,1 m/s<sup>2</sup>, and greater than (n-1) x 0,1 m/s<sup>2</sup>.
 - `n (n > 0 and n < 160)` to indicate that the vehicle is accelerating with acceleration equal to or less than n x 0,1 m/s<sup>2</sup>, and greater than (n-1) x 0,1 m/s<sup>2</sup>.
 - `160` for acceleration or greater than 15,9 m/s<sup>2</sup>.
 - `161` when the data is unavailable. 
 
 This acceleration is along the tangent plane of the road surface and does not include gravity components.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _description revised in V2.1.1 (the meaning of 160 has changed slightly). This type is now based on  the generic type AccelerationValue._

>>>
NOTE: The empty load vehicle is defined in ISO 1176 [i.9], clause 4.6.
>>>
```asn1
LongitudinalAccelerationValue::= AccelerationValue
```


### <a name="LongitudinalLanePositionValue"></a>LongitudinalLanePositionValue
 This DE represents the longitudinal offset of the map-matched position of a particular object along the
 matched lane, beginning from the lane's starting point.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,1 m_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
LongitudinalLanePositionValue ::= INTEGER (0..32767)
```


### <a name="LongitudinalLanePositionConfidence"></a>LongitudinalLanePositionConfidence
 This DE represents the absolute accuracy of longitudinal lane position measurement to a confidence level of 95%.

 The value shall be set to:
 - `n (n > 0 and n < 101)` if the  accuracy is equal to or less than n x 0,01 m, and more than (n-1) x 0,01 m.
 - `101` if the acceleration accuracy is out of range i.e. greater than 1 m.
 - `102` if the data is unavailable.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,01 meter_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
LongitudinalLanePositionConfidence ::= INTEGER {
    outOfRange  (101),
    unavailable (102)  
} (0..102)
```


### <a name="MessageId"></a>MessageId
 This DE represents the type of facility layer message.

  The value shall be set to:
	- 1  - `denm`              - for Decentralized Environmental Notification Message (DENM) as specified in ETSI EN 302 637-3 [i.3],
  - 2  - `cam`               - for Cooperative Awareness Message (CAM) as specified in ETSI EN 302 637-2 [i.2],
  - 3  - `poi`               - for Point of Interest message as specified in ETSI TS 101 556-1 [i.11],
  - 4  - `spatem`            - for Signal Phase And Timing Extended Message (SPATEM) as specified in ETSI TS 103 301 [i.17],
  - 5  - `mapem`             - for MAP Extended Message (MAPEM) as specified in ETSI TS 103 301 [i.17],
  - 6  - `ivim`              - for in Vehicle Information Message (IVIM) as specified in ETSI TS 103 301 [i.17],
  - 7  - `ev-rsr`            - for Electric vehicle recharging spot reservation message, as defined in ETSI TS 101 556-3 [i.14],
  - 8  - `tistpgtransaction` - for messages for Tyre Information System (TIS) and Tyre Pressure Gauge (TPG) interoperability, as specified in ETSI TS 101 556-2 [i.15],
  - 9  - `srem`              - for Signal Request Extended Message as specified in ETSI TS 103 301 [i.17],
  - 10 - `ssem`              - for Signal request Status Extended Message as specified in ETSI TS 103 301 [i.17],
  - 11 - `evcsn`             - for Electrical Vehicle Charging Spot Notification message as specified in ETSI TS 101 556-1 [i.11],
  - 12 - `saem`              - for Services Announcement Extended Message as specified in ETSI EN 302 890-1 [i.19],
  - 13 - `rtcmem`            - for Radio Technical Commission for Maritime Services Extended Message (RTCMEM) as specified in ETSI TS 103 301 [i.17],
  - 14 - `cpm`               - for Collective Perception Message (CPM) as specified in ETSI TS 103 324 [i.20],
  - 15 - `imzm`              - for Interference Management Zone Message (IMZM) as specified in ETSI TS 103 724 [i.13],
  - 16 - `vam`               - for Vulnerable Road User Awareness Message as specified in ETSI TS 130 300-3 [i.12], 
  - 17 - `dsm`               - for Diagnosis, logging and Status Message (DSM) as specified in ETSI TS 103 693 [i.21].
  - 18-255                   - reserved for future usage,
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Communication information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1 from @ref ItsPduHeader._
```asn1
MessageId::= INTEGER { 
    denm              (1),  
    cam               (2), 
    poi               (3), 
    spatem            (4), 
    mapem             (5), 
    ivim              (6), 
    ev-rsr            (7), 
    tistpgtransaction (8), 
    srem              (9), 
    ssem              (10), 
    evcsn             (11), 
    saem              (12), 
    rtcmem            (13), 
    cpm               (14),
    imzm              (15),
    vam               (16),
    dsm               (17) 
} (0..255)
```


### <a name="NumberOfOccupants"></a>NumberOfOccupants
 This DE represents the number of occupants in a vehicle.

 The value shall be set to:
 - `n (n > 1 and n < 126)` for the number n of occupants.
 - `126` for values equal to or higher than 126.
 - `127` if information is not available.`.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _1 person_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
NumberOfOccupants ::= INTEGER {
    outOfRange  (126),
    unavailable (127)
} (0 .. 127)
```


### <a name="ObjectConfidence"></a>ObjectConfidence
 This DE represents a single-value indication about the overall information quality of a perceived object on the computation.
 
 The value shall be set to:  
 -`0`                     : if there is no confidence in detected object, e.g. for "ghost"-objects or if confidence could not be computed.
 - `n (n > 0 and n < 15)` : for the applicable confidence value.
 -`15`                    : if there is full confidence in the detected ObjectDescriptor.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _n/a_

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
ObjectConfidence ::= INTEGER {
    noConfidence        (0), 
    fullConfidence      (15) 
} (0..15)
```


### <a name="ObjectDimensionValue"></a>ObjectDimensionValue
 This DE represents a single dimension of an object.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,1 m_

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
ObjectDimensionValue ::= INTEGER (0..1023)
```


### <a name="ObjectDimensionConfidence"></a>ObjectDimensionConfidence
 This DE represents the accuracy of the provided object dimension value with a confidence level of 95%.

 The value shall be set to:
 - `n (n > 0 and n < 101)` if the dimension accuracy is equal to or less than n x 0,01 meter, and more than (n-1) x 0,01 meter .
 - `101` if the dimension accuracy is out of range i.e. greater than 1 m.
 - `102` if the data is unavailable.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,01 m_

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
ObjectDimensionConfidence ::= INTEGER { 
    outOfRange              (101),
    unavailable             (102)
} (0..102)
```


### <a name="ObjectDynamicStatus"></a>ObjectDynamicStatus
 The DE indicates whether the detected object is classified as a dynamic (i.e. moving) object.
 This value indicates whether an object has the general capability to move, i.e. change its
 position.

 The value shall be set to:
 -  `0` - dynamic             - if the object is moving.
 -  `1` - hasBeenDynamic      - if the object has been dynamic before, e.g., a car stopping at a traffic light.
 -  `2` - static              - if the object has been detected to be not moving throughout any previous observation.
 -  `3` - unavailable         - if the information is unavailable. 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
ObjectDynamicStatus ::= INTEGER {
    dynamic             (0),
    hasBeenDynamic      (1),
    static              (2),
    unavailable			(3)    
} (0..3)
```


### <a name="ObjectRefPoint"></a>ObjectRefPoint
 This DE indicates the approximate position of the reference point of measurement for the object dimensions using a 9 cell grid. 
 The point is located on the object´s face that is perpendicular to the direction of the object's [**yawAngleValue**](#yawAngleValue)

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
ObjectRefPoint ::= INTEGER {
    bottomLeft      (0),
    midLeft         (1),
    topLeft         (2),
    bottomMid       (3),
    midMid          (4),
    topMid          (5),
    bottomRight     (6),
    midRight        (7),
    topRight        (8)
} (0..8)
```


### <a name="ObjectFace"></a>ObjectFace
 This DE indicates the face or part of a face of a solid object.

 The object is modelled  as a rectangular prism that has a length that is greater than its width, with the faces of the object being defined as:
 - front: the face defined by the prism´s width and height, and which is the first face in direction of longitudinal movement of the object. 
 - back: the face defined by the prism´s width and height, and which is the last face in direction of longitudinal movement of the object. 
 - side: the faces defined by the prism´s length and height with "left" and "right" defined by looking at the front face and "front" and "back" defined w.r.t to the front and back faces. 

 Note: It is permissible to derive the required object dimensions and orientation from models to provide a best guess.

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V2.1.1_
```asn1
ObjectFace ::= ENUMERATED {
    front          (0), 
    sideLeftFront  (1), 
    sideLeftBack   (2), 
    sideRightFront (3), 
    sideRightBack  (4),
    back           (5)   
}
```


### <a name="OffRoadLanePosition"></a>OffRoadLanePosition
 This DE represent a lateral position with lane-level resolution on the road reservation, which is not on regular traffic lanes. 
 
 The value shall be set to:
 - 0 - `unavailable` - if information on the lane position is unavailable.
 - 1 - `sidewalk`    - if the position is on the side-walk.
 - 2 - `parkingLane` - if the position is on an area at the side of the road not intended for travel but for vehicular parking.
 - 3 - `bikeLane`    - if the position is on an area reserved for bicycles.
 - 4-15              - reserved for future usage. Value 15 set to "max" in order to bound the size of the encoded field.

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
OffRoadLanePosition ::= ENUMERATED {
   unavailable (0), 
   sidewalk    (1), 
   parkingLane (2), 
   bikeLane    (3), 
   max         (15)
}
```


### <a name="OpeningDaysHours"></a>OpeningDaysHours
 This DE represents a time period to describe the opening days and hours of a Point of Interest.
 (for example local commerce).
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Time information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
OpeningDaysHours ::= UTF8String
```


### <a name="OrdinalNumber1B"></a>OrdinalNumber1B
 The DE represents an ordinal number that indicates the position of an element in a set. 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
OrdinalNumber1B ::= INTEGER(1..255) 
```


### <a name="OtherSubClass"></a>OtherSubClass
 This DE indicates the subclass of a detected object for object class "otherSubclass".

 The value shall be set to:
 - `0` - unknown       - if the subclass is unknown.
 - `1` - roadSideUnit  - if the object is a roadside unit.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
OtherSubClass ::= INTEGER {
    unknown      (0),
    roadSideUnit (1)
} (0..255)
```


### <a name="PathDeltaTime"></a>PathDeltaTime
 This DE represents the recorded or estimated travel time between a position and a predefined reference position. 
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.01 second_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _same type as in V1.3.1 but now based on a basic type_
```asn1
PathDeltaTime ::= DeltaTimeHundredthOfSecond
```


### <a name="PerformanceClass"></a>PerformanceClass
 This DE denotes the ability of an ITS-S to provide up-to-date information.
 A performance class value is used to describe age of data. The exact values are out of scope of the present document.
 
  The value shall be set to:
 - `0` if  the performance class is unknown.
 - `1` for performance class A as defined in ETSI TS 101 539-1 [i.6]
 - `2` for performance class B as defined in ETSI TS 101 539-1 [i.6]
 -  Values in the range `3 to 7` are reserved for future use.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
PerformanceClass ::= INTEGER {
    unavailable       (0), 
    performanceClassA (1), 
    performanceClassB (2)
} (0..7)
```


### <a name="PhoneNumber"></a>PhoneNumber
 This DE represents a telephone number
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PhoneNumber ::= NumericString (SIZE(1..16))
```


### <a name="PosCentMass"></a>PosCentMass
 This DE indicates the perpendicular distance from the centre of mass of an empty load vehicle to the front line of
 the vehicle bounding box of the empty load vehicle.

 The value shall be set to:
 - `n (n > 0 and n < 62)` for any aplicable value n between 0,1 meter and 6,2 meters. 
 - `62` for values equal to or higher than `6.2 metres`.
 - `63`  if the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,1 metre_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_

>>>
NOTE: The empty load vehicle is defined in ISO 1176 [i.9], clause 4.6.
>>>
```asn1
PosCentMass ::= INTEGER {
    tenCentimeters (1), 
    outOfRange     (62),
    unavailable    (63)
} (1..63)
```


### <a name="PositioningSolutionType"></a>PositioningSolutionType
 This DE indicates the positioning technology being used to estimate a geographical position.

 The value shall be set to:
 - 0 `noPositioningSolution`  : no positioning solution used,
 - 1 `sGNSS`                  : Global Navigation Satellite System used,
 - 2 `dGNSS`                  : Differential GNSS used,
 - 3 `sGNSSplusDR`            : GNSS and dead reckoning used,
 - 4 `dGNSSplusDR`            : Differential GNSS and dead reckoning used,
 - 5 `dR`                     : dead reckoning used.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PositioningSolutionType ::= ENUMERATED {
    noPositioningSolution (0), 
    sGNSS                 (1), 
    dGNSS                 (2), 
    sGNSSplusDR           (3), 
    dGNSSplusDR           (4), 
    dR                    (5), 
    ...
}
```


### <a name="PositionOfOccupants"></a>PositionOfOccupants
 This DE indicates whether a passenger seat is occupied or whether the occupation status is detectable or not.
 
 The number of row in vehicle seats layout is counted in rows from the driver row backwards from front to the rear
 of the vehicle.
 The left side seat of a row refers to the left hand side seen from vehicle rear to front.
 Additionally, a bit is reserved for each seat row, to indicate if the seat occupation of a row is detectable or not,
 i.e. `row1NotDetectable (3)`, `row2NotDetectable(8)`, `row3NotDetectable(13)` and `row4NotDetectable(18)`.
 Finally, a bit is reserved for each row seat to indicate if the seat row is present or not in the vehicle,
 i.e. row1NotPresent `(4)`, row2NotPresent `(9)`, `row3NotPresent(14)`, `row4NotPresent(19)`.
 
 When a seat is detected to be occupied, the corresponding seat occupation bit shall be set to `1`.
 For example, when the row 1 left seat is occupied, `row1LeftOccupied(0)` bit shall be set to 1.
 When a seat is detected to be not occupied, the corresponding seat occupation bit shall be set to `0`.
 Otherwise, the value of seat occupation bit shall be set according to the following conditions:
 - If the seat occupation of a seat row is not detectable, the corresponding bit shall be set to `1`.
   When any seat row not detectable bit is set to `1`, all corresponding seat occupation bits of the same row
   shall be set to `1`.
 - If the seat row is not present, the corresponding not present bit of the same row shall be set to `1`.
   When any of the seat row not present bit is set to `1`, the corresponding not detectable bit for that row
   shall be set to `1`, and all the corresponding seat occupation bits in that row shall be set to `0`.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PositionOfOccupants ::= BIT STRING {
    row1LeftOccupied  (0),
    row1RightOccupied (1),
    row1MidOccupied   (2),
    row1NotDetectable (3),
    row1NotPresent    (4),
    row2LeftOccupied  (5),
    row2RightOccupied (6),
    row2MidOccupied   (7),
    row2NotDetectable (8),
    row2NotPresent    (9),
    row3LeftOccupied  (10),
    row3RightOccupied (11),
    row3MidOccupied   (12),
    row3NotDetectable (13),
    row3NotPresent    (14),
    row4LeftOccupied  (15),
    row4RightOccupied (16),
    row4MidOccupied   (17),
    row4NotDetectable (18),
    row4NotPresent    (19)
} (SIZE(20))
```


### <a name="PosFrontAx"></a>PosFrontAx
 This DE indicates the perpendicular distance between the vehicle front line of the bounding box and the front wheel axle in 10 centimetres.

 The value shall be set to:
 - `n (n > 0 and n < 19) for any aplicable value between 0,1 meter and 1,9 meters. 
 - `19` for values equal to or higher than 1.9 metres.
 - `20` if the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.1 metre_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
PosFrontAx ::= INTEGER {
    outOfRange (19), 
    unavailable(20)
} (1..20)
```


### <a name="PosLonCarr"></a>PosLonCarr
 This DE represents the distance from the centre of vehicle front bumper to the right or left longitudinal carrier of vehicle.
 The left/right carrier refers to the left/right as seen from a passenger sitting in the vehicle.

 The value shall be set to:
 - `n (n > 0 and n < 126)` for any aplicable value between 0,01 meter and 1,26 meters. 
 - `126` for values equal to or higher than 1.26 metres.
 - `127` if the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,01 metre_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
PosLonCarr ::= INTEGER {
    outOfRange  (126),
    unavailable (127)
} (1..127)
```


### <a name="PosPillar"></a>PosPillar
 This DE represents the perpendicular inter-distance of neighbouring pillar axis of vehicle starting from the
 middle point of the front line of the vehicle bounding box.

 The value shall be set to:
 - `n (n > 0 and n < 29)` for any aplicable value between 0,1 meter and 2,9 meters. 
 - `29` for values equal to or greater than 2.9 metres.
 - `30` if the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,1 metre_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
PosPillar ::= INTEGER {
    outOfRange  (29),
    unavailable (30)
} (1..30)
```


### <a name="PostCrashSubCauseCode"></a>PostCrashSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `postCrash` .
 
 The value shall be set to:
 - 0 `unavailable`                                               : in case further detailed information on post crash event is unavailable,
 - 1 `accidentWithoutECallTriggered`                             : in case no eCall has been triggered for an accident,
 - 2 `accidentWithECallManuallyTriggered`                        : in case eCall has been manually triggered and transmitted to eCall back end,
 - 3 `accidentWithECallAutomaticallyTriggered`                   : in case eCall has been automatically triggered and transmitted to eCall back end,
 - 4 `accidentWithECallTriggeredWithoutAccessToCellularNetwork`  : in case eCall has been triggered but cellular network is not accessible from triggering vehicle,
 - 5-255                                                         : reserved for future usage.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Traffic information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PostCrashSubCauseCode ::= INTEGER {
    unavailable                                              (0), 
    accidentWithoutECallTriggered                            (1), 
    accidentWithECallManuallyTriggered                       (2), 
    accidentWithECallAutomaticallyTriggered                  (3), 
    accidentWithECallTriggeredWithoutAccessToCellularNetwork (4)
} (0..255)
```


### <a name="PrecipitationIntensity"></a>PrecipitationIntensity
 This DE represent the total amount of rain falling during one hour. It is measured in mm per hour at an area of 1 square meter.  
 
 The following values are specified:
 - `n (n > 0 and n < 2000)` if the amount of rain falling is equal to or less than n x 0.1 mm/h and greater than (n-1) x 0.1 mm/h.
 - `2000` if the amount of rain falling is greater than 199.9 mm/h 
 - `2001` if the information is not available

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.1 mm/h_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _created in V2.1.1_
```asn1
PrecipitationIntensity ::= INTEGER {
	outOfRange								(2000), 
	unavailable								(2001) 
} (1..2001)
```


### <a name="ProtectedZoneID"></a>ProtectedZoneID
 This DE represenst the indentifier of a protected communication zone.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Infrastructure information Communication information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
ProtectedZoneID ::= INTEGER (0.. 134217727)
```


### <a name="ProtectedZoneRadius"></a>ProtectedZoneRadius
 This DE represenst the radius of a protected communication zone. 
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _metre_

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Infrastructure information Communication information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
ProtectedZoneRadius ::= INTEGER (1..255,...)
```


### <a name="ProtectedZoneType"></a>ProtectedZoneType
 This DE indicates the type of a protected communication zone, so that an ITS-S is aware of the actions to do
 while passing by such zone (e.g. reduce the transmit power in case of a DSRC tolling station).
 
 The protected zone type is defined in ETSI TS 102 792 [i.16].
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Communication information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
ProtectedZoneType::= ENUMERATED {
    permanentCenDsrcTolling (0), 
    ..., 
    temporaryCenDsrcTolling (1) 
}
```


### <a name="PtActivationData"></a>PtActivationData
 This DE is used for various tasks in the public transportation environment, especially for controlling traffic
 signal systems to prioritize and speed up public transportation in urban area (e.g. intersection "_bottlenecks_").
 The traffic lights may be controlled by an approaching bus or tram automatically. This permits "_In Time_" activation
 of the green phase, will enable the individual traffic to clear a potential traffic jam in advance. Thereby the
 approaching bus or tram may pass an intersection with activated green light without slowing down the speed due to
 traffic congestion. Other usage of the DE is the provision of information like the public transport line number
 or the schedule delay of a public transport vehicle.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PtActivationData ::= OCTET STRING (SIZE(1..20))
```


### <a name="PtActivationType"></a>PtActivationType
 This DE indicates a certain coding type of the PtActivationData data.

 The folowing value are specified:
 - `0` undefinedCodingType  : undefined coding type,
 - `1` r09-16CodingType     : coding of PtActivationData conform to VDV recommendation 420 [i.8],
 - `2` vdv-50149CodingType  : coding of PtActivationData based on VDV recommendation 420 [i.8].
 - values 3 to 255          : reserved for alternative and future use.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
PtActivationType ::= INTEGER {
    undefinedCodingType (0), 
    r09-16CodingType    (1), 
    vdv-50149CodingType (2)
} (0..255)
```


### <a name="RailwayLevelCrossingSubCauseCode"></a>RailwayLevelCrossingSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `railwayLevelCrossing` .
 
 The value shall be set to:
 - 0 `unavailable`                   : in case no further detailed information on the railway level crossing status is available,
 - 1 `doNotCrossAbnormalSituation`   : in case when something wrong is detected by equation or sensors of the railway level crossing, 
                                         including level crossing is closed for too long (e.g. more than 10 minutes long ; default value),
 - 2 `closed`                        : in case the crossing is closed (barriers down),
 - 3 `unguarded`                     : in case the level crossing is unguarded (i.e a Saint Andrew cross level crossing without detection of train),
 - 4 `nominal`                       : in case the barriers are up and lights are off.
 - 5-255: reserved for future usage.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Traffic information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
RailwayLevelCrossingSubCauseCode ::= INTEGER {
    unavailable                 (0), 
    doNotCrossAbnormalSituation (1), 
    closed                      (2), 
    unguarded                   (3), 
    nominal                     (4)
} (0..255)
```


### <a name="RequestResponseIndication"></a>RequestResponseIndication
 This DE indicates whether an ITS message is transmitted as request from ITS-S or a response transmitted from
 ITS-S after receiving request from other ITS-Ss.

 The value shall be set to:
 - 0 `request`  : for a request message. 
 - 1 `response` : for a response message.  
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Communication information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
RequestResponseIndication ::= ENUMERATED {
    request  (0), 
    response (1)
}
```


### <a name="RescueAndRecoveryWorkInProgressSubCauseCode"></a>RescueAndRecoveryWorkInProgressSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `rescueAndRecoveryWorkInProgress` 
 
 The following value are specified:
 - 0 `unavailable`             : in case further detailed information on rescue and recovery work is unavailable,
 - 1 `emergencyVehicles`       : in case rescue work is ongoing by emergency vehicles,
 - 2 `rescueHelicopterLanding` : in case rescue helicopter is landing,
 - 3 `policeActivityOngoing`   : in case police activity is ongoing,
 - 4 `medicalEmergencyOngoing` : in case medical emergency recovery is ongoing,
 - 5 `childAbductionInProgress`: in case a child kidnapping alarm is activated and rescue work is ongoing,
 - 6-255: reserved for future usage.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Traffic information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
RescueAndRecoveryWorkInProgressSubCauseCode ::= INTEGER {
   unavailable              (0), 
   emergencyVehicles        (1), 
   rescueHelicopterLanding  (2), 
   policeActivityOngoing    (3), 
   medicalEmergencyOngoing  (4), 
   childAbductionInProgress (5)
} (0..255)
```


### <a name="RoadType"></a>RoadType
 This DE indicates the type of a road segment.
 
 The value shall be set to:
 - 0 `urban-NoStructuralSeparationToOppositeLanes`       : for an urban road with no structural separation between lanes carrying traffic in opposite directions.
 - 1 `urban-WithStructuralSeparationToOppositeLanes`     : for an urban road with structural separation between lanes carrying traffic in opposite directions.
 - 2 `nonUrban-NoStructuralSeparationToOppositeLanes`    : for an non urban road with no structural separation between lanes carrying traffic in opposite directions.
 - 3 `nonUrban-WithStructuralSeparationToOppositeLanes`  : for an non urban road with structural separation between lanes carrying traffic in opposite directions.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
RoadType ::= ENUMERATED {
    urban-NoStructuralSeparationToOppositeLanes      (0),
    urban-WithStructuralSeparationToOppositeLanes    (1),
    nonUrban-NoStructuralSeparationToOppositeLanes   (2),
    nonUrban-WithStructuralSeparationToOppositeLanes (3)
}
```


### <a name="RoadworksSubCauseCode"></a>RoadworksSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `roadworks`.
 
The value shall be set to:
 - 0 `unavailable`                 : in case further detailed information on roadworks is unavailable,
 - 1 `majorRoadworks`              : in case a major roadworks is ongoing,
 - 2 `roadMarkingWork`             : in case a road marking work is ongoing,
 - 3 `slowMovingRoadMaintenance`   : in case slow moving road maintenance work is ongoing,
 - 4 `shortTermStationaryRoadworks`: in case a short term stationary roadwork is ongoing,
 - 5 `streetCleaning`              : in case a vehicle street cleaning work is ongoing,
 - 6 `winterService`               : in case winter service work is ongoing,
 - 7-255 reserved for future usage.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Traffic information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
RoadworksSubCauseCode ::= INTEGER {
    unavailable                  (0), 
    majorRoadworks               (1),
    roadMarkingWork              (2), 
    slowMovingRoadMaintenance    (3), 
    shortTermStationaryRoadworks (4), 
   streetCleaning                (5), 
   winterService                 (6)
} (0..255)
```


### <a name="SafeDistanceIndicator"></a>SafeDistanceIndicator
 This DE indicates if a distance is safe