ATLS w/ siding trigger?

[dragenrider]

Hi, folks. I'm using ATLS for activation of a level crossing. It works great! However, I'd like to add another trigger on a nearby siding so that trains coming back on the main line from the siding will properly activate the crossing signal devices. What's the best way to do this?

 

[NIARTcar]

Itys just as simple as adding another trigger on the same channel as the others for this crossing, the atls will still recognize it as a starter trigger.

cheers

 

[paulzmay]

Just make sure that the trigger is positioned somewhere that trains will not activate it and then change directions - this really confuses matters.

Paul

 

[boat]

The main thing is to imagine the track or route your train will take on its journey.

For any given crossing/channel the train needs to pass-over the correct number of triggers. They don't have to be the same ones, just the correct number.

So if you're using the 2 Trigger Method the SPL/LCM event will happen as the train enters the first Trigger's radius. The SPL/LCM event will end, (the crossing will close) as the train leaves the second Trigger's radius, (no matter which side of the crossing that second Trigger is!). If it hits a third Trigger it will see that as a new arrival and start the crossing event again..... If it only hits one Trigger the cossing will stay open forever or until that particular train happens to stumble across another Trigger on the same channel.

Similarly, if you're using the 4 Trigger Method, plot a route for your train that passes-over (any) 4 Triggers. In this case, the train must 'leave' the 4th Trigger to re-set correctly.

You can also substitute a Driver Command for one of the Triggers if you like... but keep that mental train-route in mind for the correct number of Triggers/Commands.

Hope that helps,

Boat

 

[stagecoach]

From a siding I prefer the driver command to the trigger. Use the driver command that matches your trigger set up. place it in the drivers instructions when it has entered the siding to end the event. Use the same command again before the train leaves the siding to start the event. As Boat mentioned any combination of triggers and commands can be used, but the total must not exceed the number for the mode you are using. If unsure Adrian19 has a command that sets it all back to zero.