ETSI-ITS-CDD.md

   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 
 This DE is FALSE  if  the triple  {LaD,  LoD, VD} < {MSLaD, MSLoD, MSVD} simultaneously  satisfied with confidence of  90 % or  more. 
 Otherwise  stationSafeDistanceIndication is set to TRUE. 

 @Note: the ebbreviations used are Lateral Distance (LaD),  Longitudinal Distance (LoD) and Vertical Distance (VD) 
 and their respective  thresholds, Minimum  Safe  Lateral  Distance (MSLaD), Minimum  Safe  Longitudinal Distance  (MSLoD),  and  Minimum  Safe Vertical Distance (MSVD)

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _created in V2.1.1_
```asn1
SafeDistanceIndicator::= BOOLEAN
```


### <a name="SemiAxisLength"></a>SemiAxisLength
 This DE represenst the absolute position accuracy in one of the axis direction as defined in a shape of ellipse with a 
 confidence level of 95 %. 
 
 The value shall be set to:
 - `1` if the accuracy is equal to or less than 1 cm,
 - `n (n > 1 and n < 4 094)` if the accuracy is equal to or less than n cm,
 - `4 094` if the accuracy is out of range, i.e. greater than 4 093 cm,
 - `4 095` if the accuracy information is unavailable.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: GeoReference Information 

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

>>>
NOTE: The fact that a position coordinate value is received with confidence set to 'unavailable(4095)'
 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.
 In all 3 cases above, the reported position coordinate value may be valid and used by the application.
 If a position coordinate value is received and its confidence is set to 'outOfRange(4094)', it means that
 the reported position coordinate value is not valid and therefore cannot be trusted. Such value is not useful
 for the application.
>>>
```asn1
SemiAxisLength ::= INTEGER{
    outOfRange  (4094), 
    unavailable (4095)
} (0..4095)
```


### <a name="SensorType"></a>SensorType
 This DE indicates the type of sensor.
 
 The value shall be set to:
 - `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 reserved for future usage.

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Sensing Information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _created in V2.1.1_
```asn1
SensorType ::= INTEGER {
    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)
} (0..15)
```


### <a name="SequenceNumber"></a>SequenceNumber
 This DE represents a sequence number.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
SequenceNumber ::=  INTEGER (0..65535)
```


### <a name="SignalViolationSubCauseCode"></a>SignalViolationSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `signalViolation`.
 
 The value shall be set to:
 - 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,
 - 4-255                         : reserved for future usage.
 

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

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


### <a name="SlowVehicleSubCauseCode"></a>SlowVehicleSubCauseCode
 This DE represents the sub cause codes of the [**CauseCode**](#CauseCode) "slowVehicle".
 
 The value shall be set to:
 - 0 `unavailable`                    : in case further detailed information on slow vehicle driving event is
                                        unavailable,
 - 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,
 - 9-255                              : reserved for future usage.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```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
 The DE indicates if a vehicle is carrying goods in the special transport conditions.
 The corresponding bit shall be set to 1 under the following conditions:
 - 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.

 Otherwise, the corresponding bit shall be set to 0.
 

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

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


### <a name="SpeedConfidence"></a>SpeedConfidence
 This DE represents the absolute accuracy of a speed value information for a predefined confidence level of 95%.
 
 The value shall be set to:
 - `n (n > 0 and n < 126)` if the speed accuracy is equal to or less than n cm/s.
 - `126` if the speed accuracy is out of range, i.e. greater than 125 cm/s.
 - `127` if the speed accuracy information is not available.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _cm/s_

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

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

>>>
NOTE: If a speed value is received and its confidence is set to `outOfRange(126)`, it means that the reported speed value is not valid 
 and therefore cannot be trusted. Such is not useful for the application.
>>>
```asn1
SpeedConfidence ::= INTEGER {
    outOfRange  (126), 
    unavailable (127)
} (1..127)
```


### <a name="SpeedLimit"></a>SpeedLimit
 This DE represents a speed limitation applied to a geographical position, a road section or a geographical region.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _km/h_

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

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


### <a name="SpeedValue"></a>SpeedValue
 This DE represents a speed value, i.e. the magnitude of the horizontal velocity-vector. 

 The value shall be set to:
 - `0` in a standstill situation.
 - `n (n > 0 and n < 16382)` 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.
 - `16382` for speed values greater than 163,81 m/s.
 - `16383` if the speed accuracy information is not available.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,01 m/s_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1 (the meaning of 16382 has changed slightly)_
```asn1
SpeedValue ::= INTEGER {
    standstill  (0), 
    outOfRange  (16382), 
    unavailable (16383)
} (0..16383)
```


### <a name="SpeedValueExtended"></a>SpeedValueExtended
 This DE represents the value of a velocity component in a defined coordinate system.

 The value shall be set to:
 - `-16383` if the speed is equal to or smaller than -163,83 m/s
 - `n (n > -16383 and n < 16382)` 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.
 - `16382` for speed values equal to or greater than 163,81 m/s.
 - `16383` if the speed accuracy information is not available.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,01 m/s_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
SpeedValueExtended ::= INTEGER {
    negativeOutOfRange (-16383),
    psotiveOutOfRange  (16382),
    unavailable        (16383)
} (-16383..16383)
```


### <a name="StabilityLossProbability"></a>StabilityLossProbability
 This DE indicates the estimated probability of a stability level and conversely also the probability of a stability loss.

 The value shall be set to:
 - `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".
 - the values between 51 and 62 are reserved for future use. 
 - `63`: this value indicates that the information is unavailable.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _2%_

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

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


### <a name="StandardLength12b"></a>StandardLength12b
 The DE represents length as a measure of distance between points or as a dimension of an object. 
 

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
StandardLength12b::= INTEGER (0..4095)
```


### <a name="StandardLength3b"></a>StandardLength3b
 The DE represents length as a measure of distance between points or as a dimension of an object. 

 The value shall be set to:
 - 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 1000 m. 
 - 5 `lessThan5km`   : for distances below 5000 m. 
 - 6 `lessThan10km`  : for distances below 10000 m. 
 - 7 `over10km`      : for distances over 10000 m. 
 

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

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


### <a name="StandardLength9b"></a>StandardLength9b
 The DE represents length as a measure of distance between points or as a dimension of an object. 
 

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
StandardLength9b::= INTEGER (0..511)
```


### <a name="StandardLength1B"></a>StandardLength1B
 The DE represents length as a measure of distance between points or as a dimension of an object. 
 

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
StandardLength1B::= INTEGER (0..255)
```


### <a name="StandardLength2B"></a>StandardLength2B
 The DE represents length as a measure of distance between points or as a dimension of an object.  
 

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
StandardLength2B::= INTEGER (0..65535)
```


### <a name="StationarySince"></a>StationarySince
 This DE indicates the duration in minutes since which something is stationary.
 
 The value shall be set to:
 - 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 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.
 

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

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


### <a name="StationaryVehicleSubCauseCode"></a>StationaryVehicleSubCauseCode
 This DE provides the value of the sub cause codes of the [**CauseCode**](#CauseCode) "stationaryVehicle". 
 
 The value shall be set to:
 - 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.
 - 7-255 reserved for future usage.
 

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

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


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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Update in V2.1.1 : changed name from StationID to StationId_
```asn1
StationId ::= INTEGER(0..4294967295)
```


### <a name="StationType"></a>StationType
 This DE represenst the type of technical context the ITS-S is integrated in.
 The station type depends on the integration environment of ITS-S into vehicle, mobile devices or at infrastructure.
 
 The value shall be set to:
 - 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,
 - 3 `moped`: ITS-S mounted on light motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] 
        class L1, L2 (VRU Profile 3)
 - 4 `motorcycles`: ITS-S mounted on motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] 
        class L3, L4, L5, L6, L7 (VRU Profile 3)
 - 5 `passengerCar`: ITS-S mounted on small passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] class M1,
 - 6 `bus`: ITS-S mounted on large passenger vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] class M2, M3,
 - 7 `lightTruck`: ITS-S mounted on light Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] class N1,
 - 8 `heavyTruck`: ITS-S mounted on Heavy Goods Vehicles as defined in UNECE/TRANS/WP.29/78/Rev.4 [i.16] 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 
        UNECE/TRANS/WP.29/78/Rev.4 [i.16] class O,
 - 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)
 - 14  reserved for future usage
 - 15 `roadSideUnit`: ITS-S mounted on an infrastructure typically positioned outside of the drivable roadway (e.g. on a gantry, on a pole, 
        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),
 - 16-255> reserved for future usage.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _revised in V2.1.1 (named values 12 and 13 added and note to value 9 deleted)_
```asn1
StationType ::= 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), 
    roadSideUnit    (15)
} (0..255)
```


### <a name="SteeringWheelAngleConfidence"></a>SteeringWheelAngleConfidence
 This DE represents the absolute accuracy for a reported steering wheel angle value for a confidence level of 95 %.
 
 The value shall be set to:
 - `n (n > 0 and n < 126)` if the steering wheel angle accuracy is equal to or less than n x 1,5 degrees,
 - `126` if the accuracy is out of range, i.e. greater than 187,5 degrees,
 - `127` if the accuracy information is not available.

 
 If a steering wheel angle value is received and its confidence is set to 'outOfRange(126)',
 it means that the reported steering wheel angle value is not valid and therefore cannot be trusted.
 Such value is not useful for the application.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _1.5 degree_

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

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

>>>
NOTE: 1: The fact that a steering wheel angle value is received with confidence set to 'unavailable(127)'
 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.
 In all 3 cases above, the reported steering wheel angle value may be valid and used by the application.
>>>
```asn1
SteeringWheelAngleConfidence ::= INTEGER {
    outOfRange                      (126), 
    unavailable                     (127)
} (1..127)
```


### <a name="SteeringWheelAngleValue"></a>SteeringWheelAngleValue
 This DE represents the steering wheel angle of the vehicle at certain point in time.
 It corresponds to the vehicle coordinate system as specified in ISO 8855 [2].
 
 The value shall be set to:
 - `-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, 
      turning clockwise (i.e. to the right).
 - `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, 
      turning counter-clockwise (i.e. to the left).
 - `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.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _1.5 degree_

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


### <a name="SubCauseCodeType"></a>SubCauseCodeType
 This DE indicates the generic sub cause of a detected event.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1 (this is  the generic sub cause type)_

>>>
NOTE: 1: The sub cause code value assignment varies based on value of [**CauseCode**](#CauseCode)
>>>
```asn1
SubCauseCodeType ::= INTEGER (0..255)
```


### <a name="Temperature"></a>Temperature
 This DE indicates a temperature value.
 The value shall be set to:
 - `-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.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _degrees Celsius_

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

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


### <a name="TimestampIts"></a>TimestampIts
 This DE represents the number of elapsed (TAI) milliseconds since the ITS Epoch. 
 The ITS epoch is `00:00:00.000 UTC, 1 January 2004`.
 "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.

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

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,001 s_

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

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

>>>
NOTE: International Atomic Time (TAI) is the time reference coordinate on the basis of the readings of atomic clocks, 
 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.
>>>
```asn1
TimestampIts ::= INTEGER (0..4398046511103)
```


### <a name="TrafficConditionSubCauseCode"></a>TrafficConditionSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `trafficCondition`. 
 
 The value shall be set to:
 - 0 `unavailable`                 : in case further detailed information on traffic jam is unavailable,
 - 1 `increasedVolumeOfTraffic`    : in case detected jam volume is increased,
 - 2 `trafficJamSlowlyIncreasing`  : in case detected traffic jam volume is increasing slowly,
 - 3 `trafficJamIncreasing`        : in case traffic jam volume is increasing,
 - 4 `trafficJamStronglyIncreasing`: in case traffic jam volume is strongly increasing,
 - 5 `trafficStationary`           : in case traffic is stationary,
 - 6 `trafficJamSlightlyDecreasing`: in case traffic jam volume is decreasing slowly,
 - 7 `trafficJamDecreasing`        : in case traffic jam volume is decreasing,
 - 8 `trafficJamStronglyDecreasing`: in case traffic jam volume is decreasing rapidly,
 - 9-255: reserved for future usage.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
TrafficConditionSubCauseCode ::= INTEGER {
    unavailable                  (0),
    increasedVolumeOfTraffic     (1),
    trafficJamSlowlyIncreasing   (2),
    trafficJamIncreasing         (3),
    trafficJamStronglyIncreasing (4),
    trafficStationary            (5),
    trafficJamSlightlyDecreasing (6),
    trafficJamDecreasing         (7),
    trafficJamStronglyDecreasing (8)
} (0..255)
```


### <a name="TrafficDirection"></a>TrafficDirection
 This DE indicates a traffic direction that is relevant to information indicated in a message.
 
 The value shall be set to:
 - 0 `allTrafficDirections` : for all traffic directions. 
 - 1 `upstreamTraffic`      : for upstream traffic. 
 - 2 `downstreamTraffic`    : for downstream traffic. 
 - 3 `oppositeTraffic`      : for traffic in the opposite direction. 

 The terms `upstream`, `downstream` and `oppositeTraffic` are relative to the event position.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1 from RelevanceTrafficDirection_

>>>
NOTE: Upstream traffic corresponds to the incoming traffic towards the event position,
 and downstream traffic to the departing traffic away from the event position.
>>>
```asn1
TrafficDirection ::= ENUMERATED {
    allTrafficDirections (0), 
    upstreamTraffic      (1), 
    downstreamTraffic    (2), 
    oppositeTraffic      (3)
}
```


### <a name="TrafficRule"></a>TrafficRule
 This DE indicates traffic rules that apply to vehicles at a certain position.

 The value shall be set to:
 - `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.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Editorial update in V2.1.1_
```asn1
TrafficRule ::= ENUMERATED {
    noPassing          (0), 
    noPassingForTrucks (1), 
    passToRight        (2), 
    passToLeft         (3), 
 ...}
```


### <a name="TrajectoryInterceptionProbability"></a>TrajectoryInterceptionProbability
 This  DE  defines  the  probability  that the ego trajectory  intercepts  with any  other object's  trajectory  on the  road. 
 
 The value shall be set to:
 - `n (n >= 0 and n <= 50)` to indicate the actual stability level.
 - the values between 51 and 62 are reserved. 
 - `63`: to indicate that the information is unavailable. 
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TrajectoryInterceptionProbability ::= INTEGER { 
    unavailable (63) 
} (0..63)
```


### <a name="TrajectoryInterceptionConfidence"></a>TrajectoryInterceptionConfidence
 This DE  defines  the  confidence level of the trajectoryInterceptionProbability.

 The value shall be set to:
 - `0` to indicate confidence less than 50 %
 - `1` to indicate confidence greater than or equal to 50 % and less than 70 %.
 - `2` to indicate confidence greater than or equal to 70 % and less than 90 %.
 - `3` to indicate confidence greater than or equal to 90%.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TrajectoryInterceptionConfidence ::= INTEGER { 
    lessthan50percent     (0), 
    between50and70Percent (1),
    between70and90Percent (2), 
    above90Percent        (3) 
} (0..3)
```


### <a name="TurningDirection"></a>TurningDirection
 This DE provides the turning direction. 
 
 The value shall be set to:
 - `left` for turning to te left.
 - `right`for turing to the right.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
TurningDirection::= ENUMERATED {
    left, 
    right 
}
```


### <a name="TurningRadius"></a>TurningRadius
 This DE represents the smallest circular turn (i.e. U-turn) that the vehicle is capable of making.

 The value shall be set to:
 - `n (n > 0 and n < 254)` indicates the applicable value is equal to or less than n x 0,4 meter, and greater than (n-1) x 0,4 meters.
 - `254` indicates that the turning radius is  greater than 253 x 0.4 metre = 101.2 metres.
 - `255` indicates that the information is unavailable.
 
 For vehicle with tracker, the turning radius applies to the vehicle only.
 

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0.4 metre_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised V2.1.1 (the meaning of 254 has changed slightly)_
```asn1
TurningRadius ::= INTEGER {
    outOfRange  (254),
    unavailable (255)
} (1..255)
```


### <a name="VDS"></a>VDS
 This De represents the Vehicle Descriptor Section (VDS). The values are assigned according to ISO 3779 [i.6].
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
VDS ::= IA5String (SIZE(6))
```


### <a name="VehicleBreakdownSubCauseCode"></a>VehicleBreakdownSubCauseCode
 This DE represents the value of the sub cause codes of the [**CauseCode**](#CauseCode) `vehicleBreakdown`. 
 
 The value shall be set to:
 - 0 `unavailable`         : in case further detailed information on cause of vehicle break down is unavailable,
 - 1 `lackOfFuel`          : in case vehicle break down is due to lack of fuel,
 - 2 `lackOfBatteryPower`  : in case vehicle break down is caused by lack of battery power,
 - 3 `engineProblem`       : in case vehicle break down is caused by an engine problem,
 - 4 `transmissionProblem` : in case vehicle break down is caused by transmission problem,
 - 5 `engineCoolingProblem`: in case vehicle break down is caused by an engine cooling problem,
 - 6 `brakingSystemProblem`: in case vehicle break down is caused by a braking system problem,
 - 7 `steeringProblem`     : in case vehicle break down is caused by a steering problem,
 - 8 `tyrePuncture`        : in case vehicle break down is caused by tire puncture,
 - 9 `tyrePressureProblem` : in case low tyre pressure in detected,
 - 10 `vehicleOnFire`      : in case the vehicle is on fire,
 - 11-255: reserved for future usage.

 

&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Traffic information 
```asn1
VehicleBreakdownSubCauseCode ::= INTEGER {
    unavailable          (0), 
    lackOfFuel           (1), 
    lackOfBatteryPower   (2), 
    engineProblem        (3), 
    transmissionProblem  (4), 
    engineCoolingProblem (5), 
    brakingSystemProblem (6), 
    steeringProblem      (7), 
    tyrePuncture         (8), 
    tyrePressureProblem  (9), 
    vehicleOnFire        (10)
} (0..255)
```


### <a name="VehicleHeight"></a>VehicleHeight
 This DE represents the height if the vehicle, measured from the ground to the highest point, excluding any antennas.
 In case vehicles are equipped with adjustable ride heights, camper shells, and any other
 equipment which may result in varying height, the largest possible height shall be used.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _5 cm (DE ranges to 6.35 m)_

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
VehicleHeight ::= INTEGER (0..127)
```


### <a name="VehicleLengthConfidenceIndication"></a>VehicleLengthConfidenceIndication
 This DE provides information about the presence of a trailer. 

 The value shall be set to:
 - 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 a reported vehicle length value.
 - 2 `trailerPresentWithUnknownLength` : to indicate that a trailer has been detected as present and the length is not included in a reported 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 
                                        nor the detection of trailer presence/absence is possible.

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description revised in V2.1.1_
```asn1
VehicleLengthConfidenceIndication ::= ENUMERATED {
    noTrailerPresent                (0), 
    trailerPresentWithKnownLength   (1), 
    trailerPresentWithUnknownLength (2), 
    trailerPresenceIsUnknown        (3), 
    unavailable                     (4)
}
```


### <a name="VehicleLengthValue"></a>VehicleLengthValue
 This DE represents the length of a vehicle.

 The value shall be set to:
 - `n (n > 1 and n < 1022)` to indicate the applicable value n is equal to or less than n x 0,1 meter, and greater than (n-1) x 0,1 meter.
 - `1 022` to indicate that the vehicle length is greater than 102.1 metres.
 - `1 023` to indicate that the information in unavailable.
 

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description updated in V2.1.1 (the meaning of 1 022 has changed slightly)._
```asn1
VehicleLengthValue ::= INTEGER {
    outOfRange(1022), 
    unavailable(1023)
}  (1..1023)
```


### <a name="VehicleMass"></a>VehicleMass
 This DE represents the mass of an empty loaded vehicle in multiple of 100 kg.

 The value shall be set to: 
 - `n (n > 1 and n < 1023)` to indicate that the applicable value is equal to or less than n x 100 kg, and greater than (n-1) x 100 kg.
 - `1 023` indicates that the vehicle mass is greater than 102 200 kg.
 - `1 024` indicates  the vehicle mass information is unavailable.

&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _100kg_

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Description updated in V2.1.1 (the meaning of 1 023 has changed slightly)._

>>>
NOTE: The empty load vehicle is defined in ISO 1176 [i.8], clause 4.6.
>>>
```asn1
VehicleMass ::= INTEGER {
    outOfRange (1023), 
    unavailable(1024)
} (1..1024)
```


### <a name="VehicleRole"></a>VehicleRole
 This DE indicates the role played by a vehicle at a point in time.