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Maneuver Tool

Manipulate individual maneuver roads (paths) within junction

Description

The Maneuver Tool enables the manipulation of the various individual maneuver roads (paths) within a junction. These maneuver roads do not affect the geometry of the road model, but they do affect traffic behavior. Maneuver roads export to formats such as OpenDRIVE®.

By default, whenever roads cross in a junction, the RoadRunner software creates maneuver roads automatically and makes reasonable assumptions about which roads to connect by maneuvers. However, it is occasionally necessary to add or remove maneuvers manually. The Maneuver Tool enables you to do so.

Maneuver roads are similar to normal roads, but they have certain restrictions. Maneuver roads are slip roads at both ends, which means that their start and end locations and directions are constrained to align with the anchor roads that they are attached to. For more details on slip roads, see the Slip Road Tool.

Open the Maneuver Tool

On the RoadRunner toolbar, click the Maneuver Tool button:

Maneuver Tool button

Examples

View Maneuver Roads Within Junction

Maneuver roads at a junction

  1. Click the Maneuver Tool button.

  2. Select a junction. This selection displays all the individual maneuvers within the junction.

Enable or Disable Automatic Maneuver Creation

By default, maneuver roads within a junction are automatically created or removed. Various operations cause maneuver roads to be recomputed, such as moving road geometry, adding or removing lanes, or changing lane travel directions.

Turn Automatic Maneuver Creation Off

Add a new maneuver road or delete a maneuver road. These actions disable automatic maneuver creation for the junction.

Turn Automatic Maneuver Creation On
  1. Click the Maneuver Tool button.

  2. Click the junction you want to examine. When a junction is selected, it displays all of the individual maneuvers allowed within the junction.

  3. Click Rebuild Maneuver Roads to recreate all maneuver roads and re-enable automatic maneuver creation.

Enable or Disable Automatic Maneuver Geometry

By default, maneuver road geometry is automatically updated. Various operations cause maneuver road geometry to be updated, such as moving road geometry or changing lane widths.

Turn Automatic Maneuver Geometry On

Perform an action that modifies the geometry of the maneuver road, such as adjusting the start or end location of a maneuver road or moving a maneuver road control point. The geometry of that maneuver road locks and no longer updates automatically.

Alternatively, follow these steps:

  1. Click the Maneuver Tool button.

  2. Click the junction you want to examine. When a junction is selected, it displays all the individual maneuvers allowed within the junction.

  3. Click the maneuver road you want to edit.

  4. Select the Lock Geometry check box.

Turn Automatic Maneuver Geometry Off
  1. Click the Maneuver Tool button.

  2. Click the junction you want to examine. When a junction is selected, it displays all the individual maneuvers allowed within the junction.

  3. Click the maneuver road you want to edit.

  4. Clear the Lock Geometry check box.

Add New Maneuver Road

Junction with a single maneuver road added to it

  1. Click the Maneuver Tool button.

  2. Click the junction you want to edit. All the individual maneuvers within the junction are displayed.

  3. Click the node point where you want the maneuver to begin.

  4. Right-click the node point where you want the maneuver to end. The new maneuver road is created and visible.

Adjust Start or End Location of Maneuver Road

Junction with a manuever road selected and being dragged

  1. Click the Maneuver Tool button.

  2. Click the junction you want to edit. All of the individual maneuvers within the junction are displayed.

  3. Click the maneuver road you want to edit.

  4. Click and drag the start or end line to adjust the shape of the maneuver road. Each line is constrained to lie along the anchor road the line is attached to.

Move Maneuver Road Control Point

Manuever road with its control point being adjusted

  1. Click the Maneuver Tool button.

  2. Click the junction you want to edit. All the individual maneuvers within the junction are displayed.

  3. Click the maneuver road you want to edit.

  4. Click and drag the desired control point to move it. Because maneuver roads are slip roads, the first and last control points are constrained to lie along a fixed direction. For more details on slip roads, see the Slip Road Tool.

Insert a New Control Point Within an Existing Maneuver Road

Manuever road with a new control point being added

If you need to define more complex trajectories through a junction, you can insert additional control points as follows:

  1. Click the Maneuver Tool button.

  2. Click the junction you want to edit. All of the individual maneuvers within the junction are displayed.

  3. Click the maneuver road you want to edit.

  4. Point to the blue control line at the location you want to insert a node.

  5. Right-click to insert a new node within the control line of the maneuver road.

Parameters

AttributeDescription
Turn Type

Identifies the semantic turn type for the maneuver road (left turn, U-turn, and so on).

This type is computed automatically based on the geometry of the junction, but there might be some complex junctions where the type is computed incorrectly (for example, a sharp left turn is perceived as a U-turn).

This turn type affects the role of the maneuver in junction signalization. See the Signal Tool.

Lock GeometrySee Enable or Disable Automatic Maneuver Geometry.
Introduced in R2020a