Backtracking Switches and Descriptions
The following switches are found in the Trace Options dialog box in the Schedule Server application expanding the folder.
| Switch | Description | Default |
|---|---|---|
| Angle Threshold |
Applies only if the Angular Backtrack Check switch is enabled. Backtracking does not qualify if the arc formed between a client pick-up, any intermediate event, and a client drop-off is greater than this number of degrees. |
10 |
| Dest Retrenchment Ratio | Applies only if the Angular Backtrack Check switch is enabled. If the distance from a client pick-up decreases from its maximum distance to an intermediate stop prior to the drop-off by more than this percentage, a backtrack violation applies. Set to 0 to disable. |
0 |
| Dest Retrenchment Thresh |
Applies only if the Angular Backtrack Check switch is enabled. The Destination Retrenchment Ratio check does not apply once travel enters a circle around the destination of radial length defined by this setting. If travel then leaves this circle, a Backtrack Threshold (BT) violation might be incurred. Note that for the origin, the Distance Threshold switch setting applies. |
500 |
| Distance Threshold |
Applies only if the Angular Backtrack Check switch is enabled. Backtracking does not qualify if either vector forming the arc between a client pick-up, the applicable intermediate event, and a client drop-off is less than this number of meters. |
500 |
| Origin Retrenchment Ratio | Applies only if the Angular Backtrack Check switch is enabled. If the distance from a client's pick-up location decreases from its maximum distance from an intermediary stop prior to the drop-off location by more than this percentage, then a backtrack violation applies. Set to 0 to disable. |
0 |
| Use Angular Backtrack Check | Used with the Angle Threshold and Distance Threshold switches. Specifies whether client backtracking is determined by measuring the angle between the arc formed by the client pickup coordinates, any intermediate event coordinate, and the client drop-off coordinates: OFF - Client backtracking is determined by the original circular-intersection method. ON - Client backtracking is determined by measuring the angle between the arc formed by the geocodes for a client pick-up, any intermediate event, and the client drop-off. Affects the BT violation but not the Minimize Back Tracking costing weight (CWBT). |
ON |