Lzb On The Db Br 423

Discussion in 'TSW General Discussion' started by nberneck99, Nov 26, 2020.

  1. nberneck99

    nberneck99 Well-Known Member

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    How does LZB work in the 423? It doesn’t seem to control the train like in the ICE 406/403. Any advice would be appreciated.
     
  2. Callum B.

    Callum B. Well-Known Member

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    You seem to misunderstand what LZB is. LZB stands for Linienzugbeeinflussung, or "Linear Train Control", and is a superior system to PZB in many ways in that it allows multiple trains to run within the same signal block and can see trains and speed changes many many more kilometers away than a human driver (up to 14km, I believe). It is particularly useful for high speed travel above what is deemed safe by PZB and the associated braking curves (160km/h). The information given by LZB is presented to the driver by three main gauges: one that shows the current target speed, one that shows an upcoming speed restriction, and one that shows the distance to the speed restriction. It is up to the driver to follow the current target speed (the little red teardrop-looking marker on the speed dial) by monitoring these dynamic speed changes. This is how LZB was followed back in the old days before AFB and even on the newer units that do not have AFB.

    Trains with LZB and AFB often (always?) integrate the two systems and that allows the train to control the speed based upon the information received through LZB. However this is still a separate system from LZB and is only meant as a driver convenience. For the DB BR 423, you need to manually adjust your speed in accordance to the small red dot on your speedometer and if you go too high above what the train is telling you, then you will receive an audible warning and an emergency brake penalty if you do not slow down quickly enough.
     
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  3. nberneck99

    nberneck99 Well-Known Member

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    Ahh okay, so essentially LZB is just in cab signaling, and when coupled with the AFB then controls the speed. Thank you for helping me understand
     
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