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Automated Tag-Based Train Routing

A bare layout demonstrating how automation tools can be used to route trains according to their tag. To see operation click the Start lever switch.

Description

There are four trains on the layout with four different tags: 22, 33, 44 & 55.

There are three routing examples:

Example 1 has a single turnout that sends 22 & 33 on one path and 44 & 55 on another path.

The single turnout example has been assembled using default components, most of which could be replaced by the Turnout & Signal Controller module. To minimise effort and complexity I have used the module in place of default components for the more complex examples to follow.

Examples 2 & 3 both have four tracks (three turnouts), with each train routed to its own track. They show two different ways to perform detailed routing. In any given implementation the ideal method could depend on factors such as personal preference, the number of tags and paths, and synergies with other automation processes on your layout.

Example 2 uses one detection switch per turnout position. This method simplifies connections between components but assigning tags is more complex.

Example 3 uses one detection switch per tag. This method simplifies tags, and in this instance minimises the number of detection switches, but the connections are more complex.

All detection switches can be connected wirelessly, as shown with the components labelled "pwd" in example 2. If connecting directly from a detection switch to a logic gate as per example 1 you can simply omit the wire and assign a password to the logic gate input. The switches controlling the turnouts must be connected with wires.

I do not require attribution if you incorporate this logic into a published layout, but if you do so please post a link in the comments so I can see it in action.