Pzb Question

Discussion in 'TSW Troubleshooting & Issues Discussion' started by Sharon E, Jun 17, 2025.

  1. Sharon E

    Sharon E Well-Known Member

    Joined:
    Dec 9, 2016
    Messages:
    2,098
    Likes Received:
    2,096
    For people who understand PZB, I am doing, I feel, very well with German safety systems in general. There is one thing that I have had happen on a number of occasions and have yet to figure out what is going on. After you get the initial PZB activation and you have slowed to 85 km/h and the DTG onscreen alert goes off, I am usually reacting to what is happening to figure what to do with my speed, like slowing for a station stop or new, lower speed limit, then the DTG onscreen warning comes back and I am now in penalty braking because it reads 45 km/h for a speed. So, what is the trigger here to get this new, lower PZB speed of 45 km/h. It does not happen with every PZB, actually probably less then 25%, but it happens for a reason I have yet to figure out.

    Thanks for the education on PZB.
     
  2. noir

    noir Well-Known Member

    Joined:
    Feb 16, 2020
    Messages:
    587
    Likes Received:
    1,759
    If you stop or crawl at very low speeds while in active supervision, you will be moved into restricted supervision, which is 45 km/h for 1000 Hz influencing, and 25 km/h for 500 Hz influencing.

    You can turn the player assist off, it's telling you incorrect nonsense in vast majority of cases.
     
    • Like Like x 1
  3. Sharon E

    Sharon E Well-Known Member

    Joined:
    Dec 9, 2016
    Messages:
    2,098
    Likes Received:
    2,096
    noir, thanks for the reply. I am usually going much faster then 45 km/h when the penalty braking happens. I would like to turn of that PZB info box, but I don't really know how to tell when it is safe to stop PZB monitoring from the consol displays, if that is where it is. I know eventually, the limit speed on the consol will stop blinking which is an indication that you are out of monitoring.
     
  4. noir

    noir Well-Known Member

    Joined:
    Feb 16, 2020
    Messages:
    587
    Likes Received:
    1,759
    The "Safe to Release" is completely incorrect and likely one of the reasons why you are getting those penalty brakes. You use release basically only when the distant signal showed expect stop, but before you got to the main signal, it turned green. In this case you can release once the 1000 Hz lamp goes off.

    Otherwise you have no business releasing and PZB will penalize you for its misuse even while the ridiculously wrong player assist instructed you that it is "safe".
     
    • Like Like x 4
  5. Sharon E

    Sharon E Well-Known Member

    Joined:
    Dec 9, 2016
    Messages:
    2,098
    Likes Received:
    2,096
    noir, thank you. I am trying to get good at these German routes, considering I was scared of them for a while after they came out.
     
  6. chrissiracer#7214

    chrissiracer#7214 New Member

    Joined:
    Dec 2, 2022
    Messages:
    15
    Likes Received:
    3
    Hallo! Ich habe eine Frage. Warum gibt es für den Ps5 Controller keine PZB Wachsam Direct Taste?
     
  7. stujoy

    stujoy Well-Known Member

    Joined:
    Aug 29, 2019
    Messages:
    7,001
    Likes Received:
    18,710
    It’s probably speed magnets giving you the penalty brake and the guide then shows 45 km/h speed restriction because of it, rather than you being restricted to 45 km/h out of the blue and then getting the penalty because you are over that speed. That’s my own analysis of when it’s happened to me. I just haven’t slowed down soon enough, which in some cases is quite a distance before the track speed drops to the new speed, usually at the preceding signal.
     
    • Helpful Helpful x 1
  8. noir

    noir Well-Known Member

    Joined:
    Feb 16, 2020
    Messages:
    587
    Likes Received:
    1,759
    GPA speed traps would trigger 2000 Hz (immediate penalty brake), which is not what Sharon seems to describe. I made a cheatsheet for what type of influencing to expect depending on what speed limit you are approaching:

    upload_2025-6-18_8-33-51.png
     
    • Helpful Helpful x 2
    • Like Like x 1
  9. iriv#7314

    iriv#7314 Well-Known Member

    Joined:
    Aug 23, 2021
    Messages:
    436
    Likes Received:
    350
  10. li150special

    li150special Well-Known Member

    Joined:
    May 6, 2021
    Messages:
    795
    Likes Received:
    932
    Could it be a 500hz magnet kicking in after the distant signal but before the main signal? It applies a brake curve where you have to slow down from 65kph to 45 kph within 153 metres of track. Otherwise, you will get a penalty brake application. Similarly, if you pass the 500hz magnet with more than 65 kph, you will get an immediate penalty brake application (all values for PZB O)?

    https://en.wikipedia.org/wiki/Punktförmige_Zugbeeinflussung#500-Hz_speed_limiter

    Of course, my thought only makes sense if the PZB 1000hz was triggered by a distant signal showing Vr0 ("orange"), not by one showing Vr2 or by a speed restriction warning board.
     
    Last edited: Jun 18, 2025

Share This Page