Click on Draw Tangent Polygon icon.
Create Tangent Polygon dialog box appears. Click OK.
Click in drawing to select the first point of the tangent polygon. Continue with a selection of more points to create a tangent polygon. Press Enter.
In Draw lanes and widenings dialog box choose vehicle combination to calculate widenings. Alignment parameters such as spiral lengths and radius values are calculated based on design speed defined in alignment name Category definition.
Confirm with OK.
In case horizontal elements do not match the selected standard, a warning message appears.