Feature Extent

Turn on/off the Feature Extent pane. It displays the extent of features on a selected network element.  

Once you click "Feature Extent," a pane will appear, which you can position as desired. 

To enable the feature, first click the cogwheel icon in the explorer pane and select "Show Net Element" from the available options. At the bottom of the explorer pane, a new element named "Network Elements" will be created, that includes all road objects.

Find it here: