Traffic Data

The identity of the selected road is shown at the top of the dialog box, together with information about start stationing/chainage and road length.

Find it here:

MOUS_ICO Menu: Noise > Roads and railroads > Traffic Data

or

MOUS_ICO Menu: Noise > Roads and railroads > Dialog box

MOUS_ICO Select exactly one road entity from the list

MOUS_ICO Dialog box: Traffic data

or

nco: Select a road entity (defined in Novapoint Noise)

MOUS_ICO Popup menu: Traffic data

This dialog box has a different structure than the others in Novapoint Noise. The box consists of two parts; one selection part and one data part. The selection part constitutes the left part of the dialog box and gives you the opportunity to select from a tree structure with the main subject's Traffic, Speed, and Percentage of heavy vehicles. Branches for each of the subjects may be expanded by clicking the subject name or + to the left of the subject name. Correspondingly the branches may be hidden by clicking the subject name or - to the left of the subject name. In the data part, constituting the right and biggest part of the dialog box, the entered values for the relevant combination of section and subject are shown. In principle, this window shows the entire road, divided into sections by where there are changes in traffic volume, speed level, and/or percentage of heavy vehicles. Each such section is defined by its From and To chainages and is homogenous concerning thee subjects shown in the data part. The user may choose which data to be shown in the data part by ticking the box right in front of the subject name in the selection part. Data is shown only for the subjects where there is a tick in the box in front of the subject name.

Entering data for the different subjects is more closely described below. The user may enter or edit values in the white fields in the data part by clicking in the relevant field.

During calculation, the 24h values are used to calculate Lequ and Lmax, the Night values to calculate Lnight and Day, and Evening and Night to calculate Lden.

• Automatically collapse equal sections - To save space and ease the overview on the display of the data, the data window is made in such a way that consecutive sections with equal characteristics for the shown subjects (Traffic, Speed, and/or Percentage heavy vehicles) basically are automatically joined. In connection with the editing of these data on single sections, and especially by possible splitting or joining of sections, this may give the user some rather unpleasant surprises. It is therefore recommended to switch off this functionality in connection with the editing of the data and/or the section division. This may be done by clicking the box in the lower-left corner of the dialog box. When the desired changes are entered, the function is re-activated, and the data list is automatically ”cleaned up” to just show homogenous sections again.

• Traffic - Traffic volumes are registered as average daily traffic (ADT). In addition to daily traffic, which is entered in the field 24h, it is also necessary to enter traffic Distribution for the different times of the day. By ticking the box in front of Distribution on a section, a proposal for the percentual distribution of the traffic over 24 hours appears.

The alternative 75/15/10 means that 75% of the daily traffic is in the daytime, 15% in the evening, and 10% at night. If one of the predefined distributions is selected, the values in the data fields Day, Evening, and Night are calculated automatically. If the alternative Custom is selected in the Distribution field, the user can enter numbers in the data fields Day, Evening, and Night. If this possibility is chosen, the sum in the field 24h is adjusted to the sum of the three other fields. If one then changes the value for 24h, the values for Day, Evening, and Night are changed accordingly.

By entering ADT=0 for a section, the section is not included in the calculation. This is useful if, e.g., part of the road is in a tunnel.

• Speed - Speed light vehicles and Speed heavy vehicles

Speed for light and heavy vehicles are entered as average for 24h. If the speed Varies over 24 hours, it may in addition be stated separately for each of the time periods Day, Evening, and Night. The user may switch between No and Yes in the field Varies, by double-clicking in the field or pressing <Space> when it is selected.

• Percentage heavy vehicles - Percentage heavy traffic for a section is entered as average for 24h. If the percentage of heavy traffic Varies over 24 hours, it may, in addition, be stated separately for each of the time periods Day, Evening, and Night. The user may switch between No and Yes in the field Varies, by double-clicking in the field or pressing <Space> when it is selected. If the percentage value is changed for one of the time periods, the value for 24h is adjusted accordingly.

• Calculate gradient - This button has no function in the current version of Novapoint Noise.

• Split section - A section may be divided in two by clicking Split section or by right-clicking on the line representing the relevant section. Another dialog box with a proposition as to where to split the section appears. The proposed profile will split the section into two equally long parts, this may however be changed by altering the profile number directly in this box. The new profile then will become To profile for the first part of the section, and From profile for the last part of the section. The two new sections have equal data for all parameters. To maintain the split, the value of at least one of the variables must be changed for one of the parts. If the automatic collapsing function is active (see above), the change of at least one of the parameters must happen immediately, or else the two sections will be joined again. It is therefore recommended that this function is switched off while editing. When the collapsing function is switched off, the user may perform all necessary changes in the description of the road, and after that re-activate the function.

• Delete section - A section may be deleted by clicking Delete section or by right-clicking on the line representing the relevant section. A dialog box appears. If Yes is entered, the marked section will be deleted. The section being deleted (from From profile to To profile) is joined to the preceding and will get the same characteristics as this. In the same operation To profile for the preceding section is changed to be equal to To profile for the deleted section.

• OK - The dialog box is closed and all noise sources are updated with traffic data from the list Traffic data.

• Cancel - The dialog box is closed without traffic data being changed/registered.

• Apply - Changes made in the data fields are saved without the dialog box being closed.

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