Turbo Roundabout Vehicle Envelopes Design Method

Generate various types of movements in the drawing and allows the existing movements to be edited and removed. The main purpose of this tool is to demonstrate the movements governed by the vehicles specified in the design guideline that was used to generate the roundabout.

Note:

• Movements that maneuver through the turbo roundabout will attempt to honor the Internal Circulatory Offset (from the Inner Radius or Circulatory Lane Separator). The movement will honor the External Circulatory Offset if the vehicle's off-tracking is greater than the lane width.

• To generate a movement animation, use the Run Animation tool.

For examples of how the Evaluate Movements tool works, please play the Evaluate Movements tutorial (for information on how to play a tutorial, see Tutorials -> Play).

Evaluate Movements Dialog Box

Error Notification

Indicates an error in generating the movement. If a movement cannot be generated, its name will be preceded by the graphic in the list. To find out what caused the error, move your mouse over the corresponding graphic and read the tooltip that will display.

Draw

Turns a movement on/off. By default, a movement added to the roundabout is drawn in the drawing.

Movement Name

Displays the name of the movement.

Entry Leg

Displays the entry approach leg for the movement.

Exit Leg

Displays the exit approach leg for the movement

Design Vehicle

Displays the design vehicle used for the movement.

Outer Truck Apron

Click the Outer Truck Apron button to specify that the design movement affects the design of the outer truck aprons. The outer truck apron is drawn as an offset from the movement's tire track envelopes. The External Entry Offset value is used on the entry side of the legs and roundabout while the External Exit Offset value is used on the exit side of the legs and roundabout. These values can be found in Design Guidelines' Leg Offsets Category and in Add / Edit Leg's Configure Entry Path Radii and Offsets and Configure Exit Path Radius and Offsets dialog boxes.

Note: If this design feature has not been turned on yet, clicking this feature button will turn that feature on and update the roundabout based on the movements that are specified for that feature. This design feature can be turned off and on in Generate / Edit Roundabout's Central Island section.

Evaluate Movement Tools

Button	Option	Click to...
	Add Movement	Add a movement to the roundabout.
	Edit Movement	Edit the selected movement.
	Delete Movement	Delete the selected movement. Note: If you delete a movement that is used for custom geometry, the geometry will also be removed.

In the following drawing, a successful right-turn movement is shown.

A right-turn movement performed in a Turbo Roundabout generated using a turbo roundabout vehicle envelopes design guideline