PC Is Atc/acses Really Bugged (or Maybe Not That Bad)?

Discussion in 'TSW General Discussion' started by indeed_w, Mar 20, 2026 at 10:07 AM.

  1. indeed_w

    indeed_w Member

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    After a discussion about the recent update I did a trip Trenton to New York (train 3852) and here is

    Speed, signalling and ATC/ACSES stuff I've noted:


    - Speed limit 15mph when leaving Trenton station: ACSES allowes higher speed. Would say it's an in game track speed issue. Maybe it's correct but it makes no sense to me because you can enter all other other tracks at higher speed.

    - Driving from Trenton to Edison the timetable allowes plenty of time for coasting or driving "slow". 80 mph is probably more than enough here.

    - while approaching Edison I got suddenly CAB-signalled down to 45mph, that speed stayed all the way past Edison and Metuchen. The speed only released around midway between Metuchen and Metropark. Now I noted this was actually due to an Amtrack train ahead (that passed me around Edison) and the CAB speed released as soon as this train was clear of the plaform and the switch at Metropark station. For me this looks more like a sophisticated way to avoid train running into caution signals rather than a bug.
    > Noted that I was still on time even with this speed limits

    - approaching Newark Airport I ran into a distant approach giving me another 45 mph, this speed then stayed active even after signals released due to approaching a 45 mph track limit after the station. Looks fine to me.

    - approaching Newark Penn at 30 mph I get a sudden drop to 20 mph at the (visible) code change point (CCP) only to be released to 30 mph at the next lineside signal. Same thing repeated shortly after at the next CCP and this time 20mph stayed to the station stop and further all the way out to the 30 mph switch at Harrison. Here this time only at the second lineside signal CAB speed went up to 30 mph but there's another CCP signalling down to 20mph only eventually released at the "clear" signal after the switches.
    During this period lineside signals were showing limited clear, approach medium limited clear and finally clear. Cab speed behaved like I was constantly approaching signals at danger but I was not... That's the thing I thought might have changed with the update, but unfortunately it has not! However I did capture a screen recording at will do a bug report.

    - finally there is the approach to NY Penn. I think it's ridicoulous how early you have to reduce speed to 45 - 30 and 20 mph especially because you are approaching the station in a brutal ramp. But I cannot judge if that's realistic behaviour or not.
    However I know ETCS L1LS and L2 and they have large to very large safety margins when compared to preexisting national safety systems in Switzerland. (the industry will not admit that but at least they stopped arguing when you say it because it's true ;)...)
    And it can be noted here that ACSES on the Northeast Corridor is engineered by Siemens and they did not reinvent signalling but the available safety system is obviousely an adaptation of ETCS... So in my opinion the approach to NY Penn (as well as to any signals at danger) is realistic behaviour even when I think it's ridicoulous...
    also note: even when following these approaching speed limits you arrive in NYP on time!

    > I did NOT follow the 20 mph speed limits around Newark Penn because I think these are bugged. You can do that because there is no need to apply breaks or go to suppression. It's enough to go breaks to neutral. It does not even cut off traction power. I guess that's a bug too...

    Give me your thoughts (and insights if there's NEC drivers or industry people around here). For me it's really just the Newark Penn Station that does not add up in my brain...
     
    Last edited: Mar 20, 2026 at 11:17 AM
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  2. cActUsjUiCe

    cActUsjUiCe Developer

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    If you saw the signal programming documentation the team had during the development of Trenton and compared it to how things actually behave in the game, your jaw would likely drop to the floor in disbelief.

    Compare the NEC portion between Newark Penn and New York Penn on both the Trenton and Morristown routes. The difference is night and day. You can easily test this using free roam.
     
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  3. Snorhog

    Snorhog Active Member

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    Yes kinda some of the restrictions are accurate like the approach medium going southbound before North Elizabeth I believe the slow down near Edison was Real before the FRA got real jump of a derailment happened on the MNRR and a 45 was placed there
     
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  4. indeed_w

    indeed_w Member

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    Now where would I find that documentation? ;-)

    I currently don't own Morristown Route and cannot compare. (I am busy enough with Trenton and I believe I prefere this route due to also having Amtrack on the line)
     
  5. cActUsjUiCe

    cActUsjUiCe Developer

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    It's not something you'd find online. I'm just stating that "if" you saw them, it'd blow your mind how much of a gold mine it is. The literal Bible of signal programming documents. And it was barely referenced for NYT.
     
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  6. eldomtom2

    eldomtom2 Well-Known Member

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    So you're saying that they had all the documents on how it should be, but failed to follow them for Trenton?
    Also, do you have any examples of how the Trenton signalling is inaccurate?
     
  7. cActUsjUiCe

    cActUsjUiCe Developer

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    Yea, that is what I am saying. And no I don't have any specific examples right now except the approach into Penn Station. It's been ages since I've ran the route.
     

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