TCS Full Service Breaking applied - why?

[qballbandit]

Good afternoon,
I was running an activity in OR (x3700) last night, cruising down the mainline at 35mph on all "clear" signals. All of a sudden, I started getting massive wheel slip errors, and noticed that the train brake went into a "TCS Full Service Breaking" status, reducing from 90psi to 64psi, and forcing me to stop the train.
Just before the occurrence, I passed over turnout's for a couple of industries on each side of the single track mainline.
The weather was winter/snowy, and up until that point, train handling was slow, but steady.

I am unclear as to what may have caused this, and couldn't figure out how to correct the situation once stopped, so I could continue the rest of my run.

Looking forward to hearing your input, and thank you!

[R. Steele]

Neil did you see any SPAD display in the track monitor?

[qballbandit]

Oh boy, you've got me Gerry.
I can't say for sure, and what's more, I don't know what SPAD means? Is it in the manual? I look for it tonight.
Not sure if I wan to run the activity again this evening, as I'm more in the mood for a "no problem" evening of train running.
Maybe I'll give it a shot again in the morning to see if it replicates. I know exactly where it happened. Funny thing is, the prior day, I ran a different train across it without issue, though it wasn't snowing.

[gremlin1812]

G'day Neil, a SPAD is a signal passed at danger.
Regards
Barrie

[qballbandit]

Thanks Barrie! What are the parameters for that to occur? And, what is the difference between TCS Full Service breaking vs. the train going into emergency, say if I blow through a red?
Up until that point, I was passing through clear blocks and clear over junctions/intersections, with no opposing AI on those lines.
I think I'll try again this evening, and pay close attention when approaching the location that nailed me. I'll keep the same conditions with the snow, and take it a little slower so I can view the track monitor and all signals, etc.

[charland]

Hi Neil,

There might be two things going on here. I have a decent video card, a GeForce GTX 950. When I'm running a train and OR loads a tile with a lot of objects, my video jerks and causes the wheel slip warning. I think this bug was reported a year ago and was dealt with but maybe it's back.

Paul :-)

[mikeebb]

As for the wheel slip warning: I get that whenever I start a train. Sand seems to be unable to control it - it goes away once the train gets up to a few mph. Probably not related to the issue in this thread.

TCS Full Service should occur if you pass a point where the speed limit changes and you end up going way too fast; watch for that as well as signals. If you pass a red, it should go into Emergency rather than Full Service (note the "should") but I'm not sure if ORTS recognizes that difference.

[tbundy1982]

I have a random TCS UDE every once in a while. I wonder if OR got confused as to what path you should take when you crossed those industry switches? Most of my unusual TCS problems seem to be related to paths and nodes. If you reach the end of your path, going beyond, when you pass the first switch or node in the track the TCS will apply. You can easily get TCS applications this way in dark territory. One good thing to look at when it occurs is the #4 HUD. Look to see if the player train icon is white or yellow or red(White is on-path). I've had trains on the main track claim to go "off path" on the HUD, causing a TCS UDE. A double-punch of Ctrl-M, going manual and back to automatic quickly, will reset the TCS. Then Shift-? to reset the brakes. I can usually pull this off quickly and my speed isn't affected too badly. Since OR doesn't model derailments, especially due to slack, I just live with the occasional TCS trip. Again, a quick reaction keeps the slowing to a minimum.

That said, I can't help with a definitive solution beyond the bandaid above. It doesn't happen very often for me, having to play hours before another one occurs.

Tyler

[qballbandit]

mikeebb nailed it, it was indeed an over-speed.
I remember the other evening that I was rather pressed for time, so was "cruising" the mainline a little faster than allowed. The junction that I got the braking applied on was a 30mph, coming off a 40mph stretch on the mainline, and I did NOT slow for it.
I ran it at 30 last night without issues, but purposely forced the scenario again by not slowing in a 10mph yard area, just to watch the sequence of events.

Thanks to all who responded, and provided some education.