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**Categories**: Communication information
**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.
**Categories**: Traffic information
**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.
**Categories**: Road Topology Information
**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.
**Categories**: Traffic information
**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
The value shall be set to:
- `FALSE` if the triple {LaD, LoD, VD} < {MSLaD, MSLoD, MSVD} is simultaneously satisfied with confidence level of 90 % or more.
- `TRUE` otherwise.
**Categories**: Traffic information Kinematics information
**Revision**: _created in V2.1.1_
>>>
NOTE: the abbreviations 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)
>>>
```asn1
SafeDistanceIndicator::= BOOLEAN
```
### <a name="SemiAxisLength"></a>SemiAxisLength
This DE indicates the horizontal position confidence value which represents the estimated absolute position accuracy, in one of the axis direction as defined in a shape of ellipse with a
confidence level of 95 %.
The value shall be set to:
- `n (n > 0 and n < 4 094)` if the accuracy is equal to or less than n * 0,01 metre,
- `4 094` if the accuracy is out of range, i.e. greater than 4,093 m,
- `4 095` if the accuracy information is unavailable.
**Categories**: GeoReference Information
**Revision**: _Description revised in V2.1.1_
NOTE: The fact that a position coordinate value is received with confidence value 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 position coordinate value may be valid and used by the application.
If a position coordinate value is received and its confidence value is set to 'outOfRange(4094)', it means that
the position coordinate value is not valid and therefore cannot be trusted. Such value is not useful
for the application.
>>>
```asn1
SemiAxisLength ::= INTEGER{
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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.
**Categories**: Sensing Information
**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)
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```
### <a name="SequenceNumber"></a>SequenceNumber
This DE represents a sequence number.
**Categories**: Basic information
**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.
**Categories**: Traffic information
**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.
**Categories**: Traffic information
**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.
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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.
**Categories**: Vehicle information
**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 indicates the speed confidence value which represents the estimated absolute accuracy of a speed value with a default confidence level of 95%.
If required, the confidence level can be defined by the corresponding standards applying this DE.
- `n (n > 0 and n < 126)` if the confidence value is equal to or less than n * 0,01 m/s.
- `126` if the confidence value is out of range, i.e. greater than 1,25 m/s.
- `127` if the confidence value information is not available.
**Categories**: Vehicle information
**Revision**: _Description revised in V2.1.1_
>>>
NOTE: If a speed value is received and its confidence value is set to `outOfRange(126)`, it means that the speed value is not valid
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and therefore cannot be trusted. Such is not useful for the application.
>>>
```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.
**Unit**: _km/h_
**Categories**: Infrastructure information Traffic information
**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.
**Unit**: _0,01 m/s_
**Categories**: Kinematics information
**Revision**: _Description revised in V2.1.1 (the meaning of 16382 has changed slightly)_
>>>
NOTE: the the definition of standstill is out of scope of this document.
>>>
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```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.
**Unit**: _0,01 m/s_
**Categories**: Kinematics information
**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.
**Unit**: _2%_
**Categories**: Kinematics information
**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 or shape.
**Categories**: Basic information
**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.
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 1 000 m.
- 5 `lessThan5km` : for distances below 5 000 m.
- 6 `lessThan10km` : for distances below 10 000 m.
- 7 `over10km` : for distances over 10 000 m.
**Categories**: GeoReference information
**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.
**Categories**: Basic information
**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.
**Categories**: Basic information
**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.
**Categories**: Basic information
**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 than 1 minute.
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- 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.
**Categories**: Kinematics information
**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.
**Categories**: Traffic information
**Revision**: _V1.3.1_
```asn1
StationaryVehicleSubCauseCode ::= INTEGER {
unavailable (0),
humanProblem (1),
vehicleBreakdown (2),
postCrash (3),
publicTransportStop (4),
carryingDangerousGoods (5),
vehicleOnFire (6)
} (0..255)
```
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.
**Categories**: Basic information
**Revision**: _Update in V2.1.1 : changed name from StationID to StationId_
```
### <a name="StationType"></a>StationType
This DE represents 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 (VRU profile 2).
- 3 `moped`: ITS-S mounted on light motor vehicles with less than four wheels as defined in UNECE/TRANS/WP.29/78/Rev.4 [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 `central`: ITS-S placed inside an ITS centre.
- 17-255: reserved for future usage.
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**Categories**: Communication information.
**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),
} (0..255)
```
### <a name="SteeringWheelAngleConfidence"></a>SteeringWheelAngleConfidence
This DE indicates the steering wheel angle confidence value which represents the estimated absolute accuracy for a steering wheel angle value with a confidence level of 95 %.
- `n (n > 0 and n < 126)` if the confidence value is equal to or less than n x 1,5 degrees,
- `126` if the confidence value is out of range, i.e. greater than 187,5 degrees,
- `127` if the confidence value is not available.
If a steering wheel angle value is received and its confidence value is set to 'outOfRange(126)',
it means that the steering wheel angle value is not valid and therefore cannot be trusted.
Such value is not useful for the application.
**Categories**: Vehicle Information
**Revision**: _Description revised in V2.1.1_
>>>
NOTE: The fact that a steering wheel angle value is received with confidence value 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 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.
The value shall be provided in the vehicle coordinate system as defined in ISO 8855 [2], clause 2.11.
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.
**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.
**Categories**: Traffic information
**Revision**: _Description revised in V2.1.1 (this is the generic sub cause type)_
>>>
NOTE: The sub cause code value assignment varies based on value of [**CauseCode**](#CauseCode)
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>>>
```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.
**Unit**: _degrees Celsius_
**Categories**: Basic information
**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.
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**Categories**: Basic information
**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.
**Categories**: Traffic information
**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,
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- 3 `oppositeTraffic` : for traffic in the opposite direction.
The terms `upstream`, `downstream` and `oppositeTraffic` are relative to the event position.
**Categories**: GeoReference information
**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.
**Categories**: Infrastructure information Traffic information
**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 probability.
- the values between 51 and 62 are reserved.
- `63`: to indicate that the information is unavailable.
**Categories**: Kinematics information
**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 level less than 50 %
- `1` to indicate confidence level greater than or equal to 50 % and less than 70 %.
- `2` to indicate confidence level greater than or equal to 70 % and less than 90 %.
- `3` to indicate confidence level greater than or equal to 90%.
**Categories**: Kinematics information
**Revision**: _Created in V2.1.1_
```asn1
TrajectoryInterceptionConfidence ::= INTEGER {
lessthan50percent (0),
between50and70Percent (1),
between70and90Percent (2),
above90Percent (3)
} (0..3)
```
### <a name="TransmissionInterval"></a>TransmissionInterval
This DE represents the time interval between two consecutive message transmissions.
Example: a time interval between two consecutive message transmissions.
**Unit**: _0,001 s_
**Categories**: Basic information
**Revision**: _Created in V1.3.1_
>>>
NOTE: this DE is kept for backwards compatibility reasons only. It is recommended to use the [**DeltaTimeMilliSecondPos**](#DeltaTimeMilliSecondPos) instead.
>>>
```asn1
TransmissionInterval::= INTEGER (1..10000)
```
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### <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.
**Categories**: Kinematics information
**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 metre, and greater than (n-1) x 0,4 metre.
- `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.
**Categories**: Vehicle information
**Revision**: _Description revised V2.1.1 (the meaning of 254 has changed slightly)_
```asn1
TurningRadius ::= INTEGER {
outOfRange (254),
unavailable (255)
} (1..255)
```
### <a name="ValidityDuration"></a>ValidityDuration
This DE represents the duration of a traffic event validity.
**Unit**: _1 s_
**Categories**: Basic information
**Revision**: _Created in V1.3.1_
>>>
NOTE: this DE is kept for backwards compatibility reasons only. It is recommended to use the [**DeltaTimeSecond**](#DeltaTimeSecond) instead.
>>>
```asn1
ValidityDuration::= INTEGER (0..86400)
```
This DE represents the Vehicle Descriptor Section (VDS). The values are assigned according to ISO 3779 [i.6].
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**Categories**: Vehicle information
**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 tyre puncture,
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- 9 `tyrePressureProblem` : in case low tyre pressure in detected,
- 10 `vehicleOnFire` : in case the vehicle is on fire,
- 11-255: reserved for future usage.
**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