Streets can be created either straight (default) or smoothly curved. To switch between the two states, select the segment and click Graph > Set Curves Straight, and click Graph > Set Curves Smooth in the Graph main menu.
To use settings to modify the curves in between straight and smooth, click Graph > Curves Auto Smooth to open the Curves Auto Smooth dialog box with the following options:
Threshold angle | Specifies the minimum angle for curve smoothing. |
Horizontal optimize | Sets the streets in front of slopes to straight to prevent oscillations. |