Specialisatie van BasicData voor intensiteit: TrafficFlow
Intensity data is encoded using the TrafficFlow specialization.
The complete structure is shown below. In the Dutch Profile, only vehicleFlow
is applied.
Elements
Element | Type | Mandatory | Domain | Description |
---|---|---|---|---|
vehicleFlow | VehicleFlowValue | Yes | N/A | The vehicleFlow element is a specialization of VehicleFlowValue , which is itself a specialization of DataValue |
Sub-element vehicleFlow
Attribute | Type | Mandatory | Domain | Description |
---|---|---|---|---|
accuracy | Percentage | No | >= 0, <= 100 | Not used in the Dutch Profile |
computationalMethod | ComputationMethodEnum | Only if different from the specification in the measurementSite | See explanation | |
numberOfIncompleteInputs | NonNegativeInteger | Only if available and relevant for the used computational method | >= 0 | The number of incomplete observations over a period |
numberOfInputValuesUsed | NonNegativeInteger | Only if available and relevant for the used computational method | >= 0 | The number of observations used during a measurement period to calculate a value |
smoothingFactor | Float | No | >= 0 | Not used in the Dutch Profile |
standardDeviation | Float | No | >= 0 | The spread of individual observations over the measurement period |
supplierCalculatedDataQuality | Percentage | Only if different from the specification in the measurementSite | >= 0, <= 100 | A quality indicator assigned by the data provider |
Element | Type | Mandatory | Domain | Description |
---|---|---|---|---|
dataError | Boolean | No | true, false | Indicates whether an error has been detected with this measurement point, see explanation |
reasonForDataError | MultilingualString | No | Max. 10 characters | Error code for the data error |
vehicleFlowRate | VehiclesPerHour | Yes | >= 0 | The number of vehicles passing the point per hour based on the measurement period |
Sub-attribute computationMethod
The computationMethod
element describes the calculation method used to compute the values reported for this measurement site. The following possible values are available:
- arithmeticAverageOfSamplesBasedOnAFixedNumberOfSamples: Arithmetic average over a fixed number of values, i.e., A = (v1 + v2 + … + vn) / n, with n fixed;
- arithmeticAverageOfSamplesInATimePeriod: Arithmetic average over values in a fixed time period, i.e., A = (v1 + v2 + … + vn) / n, with n variable;
- harmonicAverageOfSamplesInATimePeriod: Harmonic average over values in a fixed time period, i.e., H = n / (1/v1 + 1/v2 + … + 1/vn), with n variable;
- medianOfSamplesInATimePeriod: Median of the values in a fixed period, meaning half of the values in that period are less than or equal to the median M;
- movingAverageOfSamples: Moving average over values, i.e., At=1 = ((n-1) * (At=0/n) + vn)/n, with n fixed.
Sub-element dataError
If a measurement point or measurement section does not provide data or if the data provider determines that the data is unreliable, the following attributes must be filled for each data type:
- The
vehicleFlow
element will have the value “0” - The
dataError
element will be set to “true”