Problem with Trigger Multiple Signals

[ldowns]

Hi all--

I use Trigger Multiple Signals extensively in my layouts for diamond crossings. I've found one problem that I haven't yet found a solution for. If two trains on conflicting routes both manage to trigger the stop signals for both routes (such as if one train is almost at the home signal just as another train triggers a stop and it overruns it) there seems to be no way to reset one of the routes to proceed in order to clear the crossing. Deleting a train still leaves the signal for the conflicting route at stop (apparently the trigger doesn't recognize that a deleted train is gone). Does anyone know of a solution, such as a "Clear Signal" command?

I haven't used the Diamond Crossing Rule since last I heard there was a limit on how many times it could be used in one route (I have at least 20 or more diamond crossings).

Thanks,
Lamont

 

[sniper297]

One option for in session, click one of the drivers and tell him to stop, back him up clear of the trigger or just drive him yourself thru the junction then tell him to resume schedule. One of the best features I like about Trainz is that ingame mini dispatcher mode where you can untangle traffic jams, no other trainsim has that.

http://www.trainsim.com/vbts/showthread.php?306297-Beginners-guide-to-Trainz&p=1729753#post1729753

For setting up trigger multiple signals I read someplace that one route or the other should have priority, so I set them up something like this;

The red route is given priority over the blue route by placing a trigger 100 meters or so before the signal and increase the trigger radius to cover the whole junction, one trigger at each end overlapping so the cross signals stay red until it's clear. For the non priority route one trigger in the middle with the radius set to trip just as the loco arrives at the signal. Little if any potential for conflicts when I do it that way, with the large radius of trigred1 and trigred2 any train approaching on the blue track would not enter the crossing if a train on the red track was within 200 meters of it, and if the blue train is already in the crossing any approaching red train would have a stop indication at signals Rsig1 and Rsig2 long before he got to it.

 

[ldowns]

Perfect! That's just what I needed. It hadn't occurred to me to set one of the trigger radii larger than the other.

Thanks again,
Lamont

 

[sniper297]

Other item, if the train on the blue track is highballing toward the junction and a train hits the trigger radius on one of the red track approaches just before he gets there, the signal goes red in his face and he'll hit the emergency brakes, blow through the red, and take a 2 minute penalty. He SHOULD start back up again after the 2 minute wait, and the red train (which by this time will have stopped because his signal was triggered red when blue stopped in that trigger radius) should resume after blue clears. One way I prevent that (which might not be acceptable depending on what type of route you're simulating) is to place a trackmark short of the signal on the blue track (both approaches) with a Drive to trackmark, Wait For 5 seconds command sequence. That causes the blue to full stop before the signal, wait five seconds and then go, so he's doing less than 5mph as he enters the blue trigger radius and passes the signal. Highly unlikely to get any SPAD or emergency braking with that setup.

 

[45581fred]

Hi
I've a slightly different logic in that I only trigger one of the routes (the secondary one - or, depending on nearby junctions, the easiest one to do!)
I use two triggers. One at 100m radius, which sets a red signal, near the crossing, and one at 400m radius (vary to suit) that triggers one or more yellow or caution signals further away from the junction. I had to copy and edit the trigger multiple junctions rule to get it to set a signal to caution, but it works.
The other thing, with Diamond junctions is to try and place the triggers so that they are only triggered when the conflicting route is set - i.e. the AI switches the point in that direction.
It only took 2 years of frustration, with help from Chuck Brite's notes, before the penny dropped on this one.
It's not perfect, but this is the best I've come to so far.
To help, it pays to timetable your Trainz to avoid these conflicts in the first place, and use the triggers as back-up!
Remember, if a train SPADS, it will probably be sitting on the crossing while AI drives the other train through it!

Good luck!

 

[sniper297]

If you signal and set up triggers for all routes, it's not timing dependent.

http://www.youtube.com/watch?v=P0OG1nW7eaA

 

[train310]

How would you handle this with two tracks crossing a single one?

 

[stagecoach]

Suggest you check out http://www.boatztrainz.co.uk/ for ASB control of crossovers. his script will eliminate your situation of two trains setting the trigger at the same time.

 

[KenRuof]

I have used boats ASB, all signals are red until one route is triggered green and then the other one is locked out till the first train passes the second trigger.