Expand Arm Geometry and click on the Slip Lane, then click on the Slip Lane Exit tab.
The value in the New Lanes field is the number of new lanes for the slip lane.
The Acceleration Region Length is the section of the slip lane at the end of the slip lane that runs parallel to the original road, allowing vehicles to speed up out of the slip lane curve.
The Outer Flare Length Ratio is the length of the flare for the widening of the lanes. It is a ratio of the change in width.
The Gap Length is the gap in the curving to allow vehicles exit from the slip lane.
The Distance from Roundel is distance from the roundel of the roundabout to the end of the flaring for the slip lane creation.
The Distance to Blend Point is the minimum and maximum distance before you start the flaring for the slip lane at the end of the slip lane.
The Inner Flare Radius is the radius of the inside part of the exit flare.
The Outer Flare Radius is the radius of the outside part of the exit flare.
The Inner Taper Length Ratio is the taper on the other side of the exit of the curve and is always a triangle. It is the ratio of the change of the width.
The Adjust Kerb Offset with Flare, when selected, adjusts the change in kerb width along the flare line.
In all cases the Max and Min values represent the limiting values from the adopted design standard and the Default value will be used when the roundabout is first placed. A default value MUST be provided but Max and Min may be blank if there is no limiting value.