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Maneuver Tool

Maneuver Tool button

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, maneuver roads are created automatically whenever roads cross in a junction, and by default, the system will make reasonable assumptions about which roads should be connected by maneuvers. However, it is occasionally necessary to add or remove maneuvers manually. The Maneuver Tool gives you the power 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 start and end directions are constrained to align with the anchor roads that they are attached to.

View Maneuver Roads Within a Junction

  1. Click the Maneuver Tool button.

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

Maneuver Road Attributes

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 maneuver road's role in junction signalization. See Signal Tool.

Lock GeometrySee Enable/Disable Automatic Maneuver Geometry.

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/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 a New Maneuver Road

  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 the Start or End Location of a Maneuver Road

  1. Click the Maneuver Tool button.

  2. Click the junction you want to edit. All of the individual maneuvers within the junction will be 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 a Maneuver Road Control Point

  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.

Insert a New Control Point Within an Existing Maneuver Road

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 will be displayed.

  3. Click the maneuver road you want to edit.

  4. Move the pointer over 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.