Network analysis using traffic data
Performing a time-dependent network analysis requires taking the general steps described below.
![Note Note](rsrc/note.png)
Exercise 11 in the Network Analyst tutorial provides data and detailed instructions on how to perform a service area analysis using traffic data.
Configure historical traffic in a network dataset.
Optionally, configure live traffic in the network dataset and download live traffic data using the Update Traffic Data geoprocessing tool. If you connect to a traffic geoprocessing service from ArcGIS Online, you don't need to run any geoprocessing tools because the data is downloaded for you.
Add the network dataset as a layer to ArcMap.
Create and set up a network analysis layer.
On the Analysis Settings tab of the analysis layer's Layer Properties dialog box, choose a traffic-based cost attribute (typically named TravelTime), then specify a time and date in the same dialog box.
Note:
For the vehicle routing problem analysis layer, you specify a date on the Layer Properties window and specify the start time, and optionally a start date, in the properties of each route object. Time windows on various network analysis objects can also be set.
Caution:
Setting a time and date using ArcMap's Time Slider window only changes the display of traffic. The time slider has absolutely no influence on the results of a network analysis.
Solve the analysis.
For details on how to set and solve each type of analysis using traffic, see their respective help topics: