Train ride with a special order
In Germany, a train journey with a special order is a train journey that the dispatcher cannot or may not allow by setting a main signal or an LZB driving order derived from it or an ETCS driving permit in FS (Full Supervision) mode . Instead, the dispatcher gives his consent by means of a substitute signal ( Zs 1 or Zs 8 ), caution signal (Zs 7), a written command , signal Sh 1 as consent to entering a station from the opposite track, signal Ts 3 or, if a Zs 12 is present is, with oral mandate.
It is used as a fall-back level if regular train travel authorization is not possible.
Depending on the interlocking technology, the issuing of a substitute signal or caution signal is linked to no or only minor technical conditions. A driveway dependence is needed mandatory only when the S-Bahn Berlin, but otherwise mainly used in all other electronic interlockings, alternatively, a driveway independent operability (under conditions turnout crawler locked) possible. The dispatcher is responsible for ensuring that there are no obstacles to the train journey. Due to the fact that there is little or no technical security in place, the train journey with a special assignment generally involves an increased risk of accidents. It may therefore only take place in the event of malfunctions or specially regulated exceptions (construction sites) if the conditions have been checked manually by the dispatcher and the prescribed operational substitute measures (auxiliary barriers, etc.) have been carried out.
Company regulations
A train journey with a special assignment is subject to special company regulations. The rules stipulate a maximum speed of 40 km / h in the subsequent switch area for a train journey with a special order (since December 2015 according to a separate, slightly different definition). This means that this speed applies until the next main signal is passed, with exit and block signals from the last turnout or any other point marked with a “¥”. In contrast to the maximum speeds specified by main signals in connection with speed indicators , since December 2015 a (last) normal stopping place within a station has not been considered the end of the adjoining switch area for train journeys on special orders. Also stand-alone additional signals Zs 3 and Zs 10 to prematurely increase the speed before the end of the subsequent switch area do not apply to train journeys with a special order. In the case of block signals on the free route , the maximum speed of 40 km / h applies until the head of the train has passed the signal. If, for other reasons, a lower speed is required, this naturally applies. In addition, driving on sight can be ordered (for example by means of a warning signal or in a written order) .
In the case of an order to drive past a main light signal with a light pre-signal or a multi-section signal that shows a stop or is disturbed, information about the position of the next main signal is missing. In this case, the speed limit of 40 km / h also applies until the position of the next main signal is detected, but not more than 2000 meters. The maximum value is relevant if the distant signal announces a main signal behind a route junction, but the train does not pass this main signal. The distance of 2000 meters results from the maximum distant signal distance of 1500 meters in the new building and an addition of 500 meters for extraordinarily long distant signal distances. For reasons of practicality, a computationally simple and easily noticeable number was chosen.
Approval of the train journey
The options for approving a train journey with a special order by the dispatcher are regulated in the dispatching regulations in module 408.2456, section 1. A distinction is made between signal-guided and display-guided trains. A train is called display-guided if a train control system (LZB, ETCS) acts that can automatically bring the train to a stop and also guide it, otherwise it is called signal-guided.
Written order
The train journey can be permitted by command 1, 2 or 3, for signal-controlled trains also by command 6.
Replacement signal (Zs 1) or LZB replacement order
The train journey can be permitted for signal-guided trains by means of a replacement signal, for LZB-guided trains by means of an LZB replacement order.
Opposite track run replacement signal (Zs 8) or LZB opposite track travel order
If the train journey is to run on the opposite track , it can be permitted for signal-guided trains by means of an opposite-track substitute signal, for LZB-guided trains by means of an LZB opposite-track driving order.
Caution signal (Zs 7) or LZB caution order or ETCS operating mode OS
If a train journey has to run on sight because the track vacancy detection system is disturbed, or because a main signal is only equipped with a caution signal, it can be triggered by a caution signal for signal-guided trains, by LZB-caution order for trains guided by LZB, and by a Driving permission in the ETCS operating mode OS (On Sight) or in ETCS Level 2 in the ETCS operating mode SR (Staff Responsible) can also be permitted by means of a text message. ETCS-guided trains can be relieved of sight of the journey by command.
No driving ban signal (Sh 1)
In the area of the former Deutsche Bundesbahn, a low-profile blocking signal can be placed on the opposite track at the level of the entry signal from the control track. If this shows the signal image " Driving ban lifted " (Sh 1), the train journey is permitted. This form is no longer being rebuilt.
Signal Ts 3
The return journey of a push locomotive can be permitted for returning push locomotives and blocking trips (Ts 3) by means of the continue driving signal .
Oral order
The dispatcher can give verbal permission to drive past a signal to which the signal Zs 12 ( M panel ) is attached.
Individual evidence
- ↑ driving regulations; Directive 408.21 - 27. DB Netz AG, p. 12 , archived from the original on January 15, 2016 ; accessed on February 14, 2016 (module 408.2101A01).
- ↑ Comparison of Ril 408.0456 Section 4 as of June 10, 2012 (Announcement 11) with Ril 408.2456 as of December 13, 2015 (new edition)
- ↑ Directive (Ril) 408 of the Deutsche Bahn AG, module 408.2456, section 4, paragraph 1
- ↑ Ril 408, module 408.2456, section 4, paragraph 4
- ↑ Dirk H. Enders: "2,000 meters are enough". (PDF file, 685 KB) In: BahnPraxis issue 1/2002. Retrieved February 14, 2016 .
- ↑ a b driving regulations; Directive 408.21 - 27th DB Netz AG, archived from the original on January 15, 2016 ; accessed on February 14, 2016 (module 408.2456).
- ↑ driving regulations; Directive 408.21 - 27th DB Netz AG, archived from the original on January 15, 2016 ; accessed on February 14, 2016 (module 408.2101A01).
- ↑ Ril 301, Module 301.0601, Section 3, Paragraph 1 as well as in the ESO