Fixed route assignments are stored as Directed Routing Strings in the route database. In a Directed Routing String, branching is indicated by nested {curly braces}.
For example, consider the route described in the following figure. In this simplified illustration of a route, the various elements are indicated as shown in the following table (Directed Routing Constraints).
| Elements | Indicated By |
|---|---|
| Driver and Loads | Orange Rectangles |
| Nodes | Red lines |
| Switchboxes | Blue rectangles |
A simplified version of a Directed Routing String for that route is as follows:
{A B { D E T } C { F G H I M N } {O P Q} R J K L S }The route branches at B and C. The main trunk of this route is A B C R J K L S.
Figure 1. Branch Route Example