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Note: You can read already existing environmental parameters from the environmental parameters file (*.upa) (Opening a file). |
1. On the Calculate menu, click Environmental parameters.
The Environmental parameters window opens.
2. Select the Basis tab.
3. Make the desired changes.
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Element |
Description |
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Calculation base |
The calculation of all environmental calculation procedures is based on transport volumes. Volume PrT [Veh] The volumes are adopted from the assignment results. That means vCur per link and TSys is calculated based on tCur, via link type specific VD functions (Definition and application of volume-delay functions). AddValue1 - AddValue3 The volumes are adopted from the AddValues (count data), i.e. vCur is calculated via link type specific VD functions (Definition and application of volume-delay functions). |
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Valid speed ranges |
If the calculation is based on tCur, you can specify the valid speed ranges for cars and HGV for all environmental calculation procedures. Note If the calculation is based on vCur, the following applies: vMin is considered if vCur < vMin. vMax is considered if vCur > vMax. |
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Noise |
In the list, you can select the parameters for noise volume calculation (Calculating noise volumes). |
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mADT |
For all environmental calculation procedures a factor can be specified for every global link type for converting the mean average daily traffic (mADT) to the relevant hourly values. |
4. Select the Pollutants tab.
5. Make the desired changes.
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Element |
Description |
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List |
In the list, you can select the parameter for calculating air pollutant emissions (Calculating air pollution emissions). |
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Volume time series per link type |
If the parameter vCur with time series is selected, you can enter the desired values for the respective global link types here. |
6. Confirm with OK.
The changes are applied.
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Note: You can save your settings to the environmental parameters file (*.upa) (Saving a file). |
