AutoTURN Pro 11.0 Help
Generate Corner Path
Tools > SmartPath Tools > Generate Corner Path
Note: This functionality is only available in AutoTURN and AutoTURN Pro.

Generates a turn simulation using an entrance tangent, arc, and exit tangent, with input for the turn radius and the amount of turn sweep. The sweep can also be set by selecting an existing element. The tangents can be lengthened or shortened by moving the mouse in the direction of the tangent.

Generate Corner Path Dialog Box

Current SmartPath Tool

Highlights the current SmartPath Tool

Switch to Forward/Reverse

For forward maneuvers, the Switch to Reverse button changes the maneuver to a reverse maneuver.

For reverse maneuvers, the Switch to Forward button changes the maneuver to a forward maneuver.

Maneuver Type

Indicates which direction and what type of section (forward or reverse) is being generated for the selected SmartPath Tool.

Current Vehicle

Displays the current vehicle's library and name (see Vehicles -> Select Current Vehicle).

Steering Lock Angle or Reverse Overrides

Indicates whether the vehicle’s steering specifications or reverse overrides are being used while generating the simulation. When a forward simulation is being generated, the vehicle’s steering lock angle will always be used. When generating a reverse simulation, the Reverse Overrides settings (see Program Settings -> Vehicle Defaults Category: Reverse Overrides) will be used if they are greater than the steering specifications for the vehicle.

Preview Arc Path

If this check box is selected, the left and right projected swept path envelopes for an arc path simulation will display to help you preview the next section of the simulation. AutoTURN Pro calculates the projected swept path envelopes based on the minimum turning radius for the specified Speed value.

Speed

Sets the speed at which the vehicle is traveling.

Note: For forward maneuvers, the maximum allowed speed is 45 mph (70 km/h). Reverse maneuvers are conducted at 6 mph (10 km/h) or less.

Transition Duration

Note: This functionality is only available in AutoTURN Pro.

The time (in seconds) that an average rider would normally take to steer from one maximum steered position on one side to the maximum steered position on the other side while also accounting for the change in lean angle between the two maximum steered positions.

It is used to approximate the rate at which an average rider may negotiate turns from a tangent or from one curve to another curve of a different radius, its default value is set to one second based on field test observations.

Maximum Lean Angle

Note: This functionality is only available in AutoTURN Pro.

The maximum angle that the rider of a bicycle vehicle can lean during the maneuver.

Radius Type

Select one of the following radius types:

The Radius value is displayed for this type.

Radius

An edit box is provided to set the desired radius value for the selected radius type.

Note: AutoTURN Pro will not allow a radius to be set to a smaller value than the minimum radius capabilities for the current vehicle at the current speed.

Sweep Angle 

The sweep angle is defined as the angle between the direction of travel and the exit tangent (new heading). For corner path turn simulations (see Generate Corner Path), the centerline of the vehicle will eventually become parallel with the exit tangent if the exit tangent is long enough - the longer the exit tangent is, the closer to zero the steering angle becomes. For oversteer corner path turn simulations (see Oversteer Corner Path), the centerline of the vehicle is always parallel with the exit tangent. To set the sweep angle, type the desired value in the corresponding edit box or click the Select Sweep Angle button, and then pick an element in the drawing area.

Example of a sweep angle

Offset

Note: This functionality is only available in AutoTURN Pro.

Select this check box, choose which type of offset, and then specify the distance value to generate offset envelopes to each side of the bicycle for each section of the simulation.

Handlebars - the offset is measured from the Handlebar Height distance from the ground at the Handlebar Width location.

Head - the offset is measured from the Rider Height distance from the ground at the seat location along the longitudinal axis of the bicycle.

Pedals - the offset is measured from the Pedal Height distance from the ground at the Pedal Width location.

Superelevation

Displays the superelevation (i.e. slope) of the road surface. This value is considered in determining the minimum turn radius, and is only available at speeds of 10 mph (16 km/h) or greater. Select the Set check box to override the default value.

Note: In the SmartPath Tools, superelevation is limited to the range of -0.1 to 0.1.

Lateral Friction

Displays the friction factor between the vehicle’s tires and the road surface. This value is considered in determining the minimum turn radius, and is only available at speeds of 10 mph (16 km/h) or greater. Select the Set check box to override the default value.

Shrink/Expand

Click Shrink to reduce the SmartPath Tools dialog box to its minimum size to increase the working space in the drawing area.

Click Expand to return the SmartPath Tools dialog box to its full size.

Undo

Deletes the last generated section.

Hint: Alternatively, an undo operation can be performed by clicking inside the wheelbase of the last vehicle position generated.

See Also

Reverse Maneuvers