Atomic Systems

Having treated myself to the TS2021 Deluxe Edition which gave me WCML South and the Fife Circle I'm just doing a few runs to re learn the route.

Having done a QD from Watford to Euston Fast Line the train is routed Up line A approaching Euston and a Single Yellow in to P3
Passing the last Signal, WM488, doing 35 on a 40 I get a TPWS Application (I think) and a dead stop

A created a Free Roam and shunted out behind WM488 and it dumps the brakes passing the signal with is showing a Single Yellow and a Platform number
Even doing 5mph it dumps the brakes

Has anyone else found this problem?
I did raise a ticket to DTG and I wondered if there was something I could do - apart from removing the TPWS Grids

Peter

I found similar on a QD using the DTG Class 87, which doesn't have TPWS fitted - or at least not visible in the cab, but was able to pass the TPWS grid at 15 mph using the Class 350/1 in the WCML South pack.

Andy L

the track speeds on Euston Approch are 25mph. your approch speed in the block and at the last Signal WM488 was over the limit and TPWS was activated and stopped you.
have a look for network rails LNW South Route Sectional Appendix you can download full route PDFs

merlin20 wrote: ↑Wed Dec 16, 2020 8:57 pm the track speeds on Euston Approch are 25mph. your approch speed in the block and at the last Signal WM488 was over the limit and TPWS was activated and stopped you.
have a look for network rails LNW South Route Sectional Appendix you can download full route PDFs

You are talking about the real railway - I'm talking about the game
The Track Speeds in the HUD show 40mph until nearer the overbridge

And when I tested it the TPWS dropped the brake passing the WM488 showing a clear signal at 5 mph

so,when reading this, it seems the routes builders have chose their own speed limits? why! the TPWS will avarage your speeds out over a set distance, and if modeled correctly will stop you! even if passing your last signal at 5mph. it's that distance covered from point A-B tells TPWS your to fast. so TPWS did it's job. see if it still occurs if you approach at 24mph. worth a test.
M.

I've just tested again using the GARL Class 380, the only unit that I'm confident has a functioning TPWS, and drove at no more than 25 mph from the start of the 40 mph restriction and on passing over the TPWS grids in question at 22 mph the TPWS activated. I'd previously tested using the WCML South Pendolino and it appears that the TPWS in that is purely cosmetic, I could cross the grids at any speed without an activation but the TASS did apply the brake as I reached the 25 mph limit at 35! I've got my doubts about the WCML South 350's TPWS as well.

Andy L

P.S. FWIW you get tripped at 2 mph as well! Let's see if DTG respond to the bug report.

merlin20 wrote: ↑Thu Dec 17, 2020 9:29 pm so,when reading this, it seems the routes builders have chose their own speed limits? why! the TPWS will avarage your speeds out over a set distance, and if modeled correctly will stop you! even if passing your last signal at 5mph. it's that distance covered from point A-B tells TPWS your to fast. so TPWS did it's job. see if it still occurs if you approach at 24mph. worth a test.
M.

How do you work that out?

I'm stopped about two coaches short of WM488 and I release the brakes and I have a Single Yellow and a P3 indication
The line speed is 40 dropping to 25
As the train rolls downhill without having power applied it passes the signal at 5 mph and the brakes apply

WHAT SPEED SHOULD I PASS THE SIGNAL SO THE BRAKES DON'T APPLY?

Admittedly my knowledge of TPWS on the real railway is limited to what I've read online but the setup of the grids at this signal, and the one on Line B next to it, looks odd. I'd expect to see one combined arm and trigger grid here acting as a train stop not two. If they are placed to act as OSS grids where's the train stop?

I can't find much in the way of guidance on placing TPWS grids in the TS Route editor, any links appreciated, but what I have found on a quick look at the route in the editor suggests that they aren't OSS grids but I may well be wrong. Perhaps any route building / signalling experts might have a look and see what is happening here, past experience shows that DTG are unlikely to revisit the route now so self help seems the best way forward.

Andy L

AndyUK wrote: ↑Fri Dec 18, 2020 11:22 am but the setup of the grids at this signal, and the one on Line B next to it, looks odd. I'd expect to see one combined arm and trigger grid here acting as a train stop not two.

Bi-directional signalling: the grids to the south of the gantry are for north bound traffic, protecting the signals on the other side of the gantry to the player train in this situation.

Of course, thank you! I'd failed to spot the down direction signals on the opposite side . In that case is it possible that the Train Stop grid for WM488 is connected to the other signal and vice versa?

Andy L

AndyUK wrote: ↑Sat Dec 19, 2020 8:33 am In that case is it possible that the Train Stop grid for WM488 is connected to the other signal and vice versa?

I had a quick look last night, but everything seems to be in order. I'm not so sure it's the TPWS that's at fault though; moving the links for the grids onto an adjacent track still left the player train having the brakes applied.

Thanks for checking, I did look myself but wasn't sure what was linked to what. What else might be causing it, bearing in mind that from my observations it only affects some trains as outlined in previous posts above?

Andy L

I think I may have found the culprit. I cloned the route and deleted both grids at WM488, ran the Class 380 past the signal and still got a TPWS activation. I then went back into the editor and delved under Line A and found another TPWS grid, deleted that and was then able to pass WM488 without getting tripped.

Out of time now but later I'll clone the route again, leave the visible grids and only delete the buried one - that will be the acid test.

Andy L

Well spotted Andy

749006 wrote: ↑Sat Dec 19, 2020 1:46 pm Well spotted Andy

The only trouble is that if, as I've just found, I delete that buried one but leave the surface ones in place I still get the TPWS activation. I'll have to retrace my steps to see if I went wrong somewhere.

Andy L