Generating an opposite lane
Next to a particular link you can generate a lane with the same route which runs in the opposite direction. To do so, enter the number of lanes. The new link is independent from the original link.
1. Right-click the desired link.
2. On the shortcut menu, click Generate Opposite Direction.
The Generate Opposite Direction window opens.
3. Enter the number of lanes.
4. Confirm with OK.
The link is shown in the network editor and saved in the Links list.