This category allows you to view and edit the approach radius 2 values applied to the FDOT Geometric Design Method roundabouts.

Design Guidelines' Approach Radius 2 Category Dialog Box

In the dialog box, move the mouse pointer over the controls to view the associated tooltip and then reference the controls described below.

Splitter Island Start

Specify the distance value of the splitter island nose arc. This is measured from the intersection of the Inscribed Circle Diameter and the leg reference geometry to the extents of the arc.

Inner-Outer Offset

Specify the offset value. This is measured between the Outer Offset and the Inner Offset.

Inner Offset

Specify the offset value. This is measured from the leg reference geometry to the splitter island envelope.

Outer Offset

Specify the offset value. This is measured from the leg reference geometry to the splitter island envelope.

Approach Radius 2

Specify the radius value of the Approach Radius 2 arc.

Approach Radius 2 Angle

Specify the rotation angle of the Approach Radius 2 arc.

Note: This value is applied after the Inner Offset and Offset Values and overrides the Inner Offset and Outer Offset values.

Legend

For a description of the elements drawn in the roundabout in this category, see Roundabout Illustration Legend.