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# ASN.1 module ETSI-ITS-CDD
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 OID: _{itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) 102894 cdd (2) major-version-3 (3) minor-version-1 (1)}_
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## Data Elements:

### <a name="AccelerationChange"></a>AccelerationChange
 This DE indicates a change of acceleration.

 The value shall be set to:
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 - 0 - `accelerate` - if the magnitude of the horizontal velocity vector increases.
 - 1 - `decelerate` - if the magnitude of the horizontal velocity vector decreases.
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
AccelerationChange::= ENUMERATED { 
    accelerate (0), 
    decelerate (1) 
}
```


### <a name="AccelerationConfidence"></a>AccelerationConfidence
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 This DE indicates the acceleration confidence value which represents the estimated absolute accuracy of an acceleration value with a default confidence level of 95%. 
 If required, the confidence level can be defined by the corresponding standards applying this DE.
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 The value shall be set to:
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 - `n (n > 0 and n < 101)` if the confidence value is 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>,
 - `101` if the confidence value is out of range i.e. greater than 10 m/s<sup>2</sup>,
 - `102` if the confidence value is unavailable.

 The value 0 shall not be used.
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&nbsp;&nbsp;&nbsp;&nbsp;**Unit**: _0,1 m/s<sup>2</sup>_

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

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

>>>
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NOTE: If an acceleration value is received and its confidence value is set to `outOfRange(101)`, it means that the value is not valid and therefore cannot be trusted. Such value is not useful for the application.
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>>>
```asn1
AccelerationConfidence ::= INTEGER {
    outOfRange                 (101), 
    unavailable                (102)
} (0..102)
```


### <a name="AccelerationControl"></a>AccelerationControl
 This DE indicates the current controlling mechanism for longitudinal movement of the vehicle.
 The data may be provided via the in-vehicle network. It indicates whether a specific in-vehicle
 acceleration control system is engaged or not. Currently, this DE includes the information of the
 vehicle brake pedal, gas pedal, emergency brake system, collision warning system, adaptive cruise
 control system, cruise control system and speed limiter system.

 The corresponding bit shall be set to 1 under the following conditions:
 - 0 - `brakePedalEngaged`      - Driver is stepping on the brake pedal,
 - 1 - `gasPedalEngaged`        - Driver is stepping on the gas pedal,
 - 2 - `emergencyBrakeEngaged`  - emergency brake system is engaged,
 - 3 - `collisionWarningEngaged`- collision warning system is engaged,
 - 4 - `accEngaged`             - ACC is engaged,
 - 5 - `cruiseControlEngaged`   - cruise control is engaged,
 - 6 - `speedLimiterEngaged`    - speed limiter is engaged.

 Otherwise (for example when the corresponding system is not available due to non equipped system
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 or information is unavailable), the corresponding bit shall be set to 0.
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&nbsp;&nbsp;&nbsp;&nbsp;**Categories**: Kinematics information 

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

>>>
NOTE: The system engagement condition is OEM specific and therefore out of scope of the present document.
>>>
```asn1
AccelerationControl ::= BIT STRING {
    brakePedalEngaged       (0),
    gasPedalEngaged         (1),
    emergencyBrakeEngaged   (2),
    collisionWarningEngaged (3),
    accEngaged              (4),
    cruiseControlEngaged    (5),
    speedLimiterEngaged     (6)
} (SIZE(7))
```


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### <a name="AccelerationMagnitudeValue"></a>AccelerationMagnitudeValue
 This DE represents the magnitude of the acceleration vector in a defined coordinate system.

 The value shall be set to:
 - `0` to indicate no acceleration,
 - `n (n > 0 and n < 160)` to indicate 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 values 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**: Kinematics information 

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_

>>>
NOTE: the formula for values > -160 and <160 results in rounding up to the next value. Zero acceleration is indicated using n=0.
>>>
```asn1
AccelerationMagnitudeValue ::= INTEGER {
    positiveOutOfRange (160),
    unavailable        (161)  
} (0.. 161)
```


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

 The value shall be set to:
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 - `-160` for acceleration values equal to or less than -16 m/s<sup>2</sup>,
 - `n (n > -160 and n <= 0)` to indicate negative 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 positive 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 values greater than 15,9 m/s<sup>2</sup>,
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 - `161` when the data is unavailable.

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

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_

>>>
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NOTE: the formula for values > -160 and <160 results in rounding up to the next value. Zero acceleration is indicated using n=0.
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>>>
```asn1
AccelerationValue ::= INTEGER {
    negativeOutOfRange (-160),
    positiveOutOfRange (160),
    unavailable        (161)  
} (-160 .. 161)
```


### <a name="AccessTechnologyClass"></a>AccessTechnologyClass
 This DE indicates an access technology.

 The value shall be set to:
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 - `0`: in case of any access technology class,
 - `1`: in case of ITS-G5 access technology class,
 - `2`: in case of LTE-V2X access technology class,
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 - `3`: in case of NR-V2X access technology class.
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _Created in V2.1.1_
```asn1
AccessTechnologyClass ::= ENUMERATED {
   any         (0), 
   itsg5Class  (1), 
   ltev2xClass (2), 
   nrv2xClass  (3),
   ...
}
```


### <a name="AccidentSubCauseCode"></a>AccidentSubCauseCode
 This DE represents the value of the sub cause code of the [**CauseCode**](#CauseCode) `accident`.

 The value shall be set to:
 - 0 - `unavailable`                        - in case the information on the sub cause of the accident is unavailable,
 - 1 - `multiVehicleAccident`               - in case more than two vehicles are involved in accident,
 - 2 - `heavyAccident`                      - in case the airbag of the vehicle involved in the accident is triggered, 
                                              the accident requires important rescue and/or recovery work,
 - 3 - `accidentInvolvingLorry`             - in case the accident involves a lorry,
 - 4 - `accidentInvolvingBus`               - in case the accident involves a bus,
 - 5 - `accidentInvolvingHazardousMaterials`- in case the accident involves hazardous material,
 - 6 - `accidentOnOppositeLane`             - in case the accident happens on opposite lanes,
 - 7 - `unsecuredAccident`                  - in case the accident is not secured,
 - 8 - `assistanceRequested`                - in case rescue and assistance are requested,
 - 9-255                                    - reserved for future usage. 
 

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

&nbsp;&nbsp;&nbsp;&nbsp;**Revision**: _V1.3.1_
```asn1
AccidentSubCauseCode ::= INTEGER {
    unavailable                         (0),
    multiVehicleAccident                (1),
    heavyAccident                       (2),
    accidentInvolvingLorry              (3),
    accidentInvolvingBus                (4),
    accidentInvolvingHazardousMaterials (5),
    accidentOnOppositeLane              (6),
    unsecuredAccident                   (7),
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