Etcs

[Mediarail]

Hello,

A difficult subject : ERTMS/ETCS. The inglorious rail news this July 2013 gave railway signaling on the front of the stage, especially with the tragedy of Santiago de Compostela. The main problem seems to be that the transition between ETCS 2 and the national level, said "STM". A brief overview to put together the various pieces of the jigsaw, with an article which is deliberately lightweight, in order to make easy the learning and understanding.

http://mediarail.blogspot.be/2013/08/etcs-simply-summarized-english-version.html

(sorry for the basic english )
Mediarail.be

 

[Mr_FIP]

Hello,

A difficult subject : ERTMS/ETCS. The inglorious rail news this July 2013 gave railway signaling on the front of the stage, especially with the tragedy of Santiago de Compostela. The main problem seems to be that the transition between ETCS 2 and the national level, said "STM". A brief overview to put together the various pieces of the jigsaw, with an article which is deliberately lightweight, in order to make easy the learning and understanding.

http://mediarail.blogspot.be/2013/08/etcs-simply-summarized-english-version.html

(sorry for the basic english )
Mediarail.be

Yes a basic artical. But not actually quite correct. The first ETCS level 2 was not actually Mattstetten-Rothrist.

Prior to this there was a trial at Sursee on the Zofingen-Luzern line. 'L' type signals were removed and ETCS level 2 controlled trains on this section. With the controlling dispatcher point being Olten (Which is also today where Mattstetten-Rothrist is controlled from)

After the Sursee trial the section of line was then equipted with 'N' type signalling and ETCS level 2 recovered.

The transition between ETCS and the national signalling/protection system is suppost to put the train back at a line speed in accordance with the speed for that section of line.

Similar to the transition between LZB and PZB (INDUSI) of the German Railways. If you stand behind the driving room on ICE and know where LZB ends you can watch the transition!

After the end point of ETCS level 2 control (or LZB) there is nothing to prevent the driver from over speeding if this is not montored by the national signalling system.

Also for a German train because of limiters in the locomotive it cannot exceed 160km/hr without LZB or ETCS level 2 being in control.

But 160km/h is still quite fast on an 80km curve. So for German PZB with the INDUSI magnets, support of a speed control curve is also possible.

If time between INDUSI magnets is to short then train must be over speeding, apply brakes!

http://www.sh1.org/eisenbahn/rindusi.htm