TBL
TBL stands for "Transmissie Baken-Locomotief" / "Transmission Balise-Locomotive", a Belgian train control system . There is a variant as a point train control system (TBL1) and a variant as a linear train control system (TBL2). The system consists of a trackside balise on each signal and an on-board unit.
TBL1
TBL1 is a point train control system that is installed on around 13% of the Belgian route network. In addition to the functions of the Crocodile, the TBL1 causes an emergency brake in the event of an inadmissible drive past the main signal indicating the stop .
TBL1 +
This system is an interim solution that is intended to facilitate the migration to the European train control system ETCS . With this system, the same signal aspects are transmitted as with TBL1 and interpreted in the same way by the vehicle. However, as with the ETCS system , Eurobalises are used as the transmission path from the route to the vehicle . On the vehicle side, only a balise transmission module has to be added as a receiver, the rest of the TBL electronics remain unchanged.
The TBL1 + signal aspects are transmitted using bits that are reserved for national applications (packet 44). TBL1 + and ETCS signal aspects can therefore be transmitted via the same Eurobalise. As an extension of TBL1, there is another balise about 300 meters in front of the main signal, which also triggers an emergency brake if the signal shows a stop at a speed of more than 40 km / h.
In order to be able to achieve a quick reduction of the operational risk, the risk for each signal was assessed. First, 25 percent of the signals were equipped with TBL1 +. This means that 80 percent of the safety gain that can be achieved was achieved.
In addition to TBL packets, ETCS data packets are also to be added later.
Infrabel would like to have the entire route network equipped with TBL1 + by 2015 , accelerated by the accident in Buizingen .
The section between Aachen Hbf (tracks 6–9) and the German-Belgian border via Aachen Süd was also put into operation on December 13, 2013 with TBL1 +. The system is intended to enable Belgian vehicles without PZB 90 to travel to Aachen Hbf and thus to replace the TBL1 (Crocodile) system. However, a maximum speed of 100 km / h then applies. In order to be able to use the full speed of 160 km / h, the PZB 90 must be activated. Transition balises do this automatically in vehicles equipped with ETCS if an STM PZB is installed. In the long term, ETCS information should also be transmitted via the Eurobalises (currently only an empty ETCS telegram with a package 44 with the TBL1 + information is transmitted).
TBL2
After it had been shown that effective train protection is not possible with TBL1, the decision was made at the end of the 1980s to no longer install TBL1 and to begin developing a TBL2 system with complete speed monitoring. Since the TBL2 system was not yet fully developed before the opening of the high-speed line HSL 1, which went into operation in 1997 , the line was also equipped with the French TVM 430 train control system in the Belgian part . For the first time, a different train protection system than TBL was used in Belgium.
In 1999 the decision was made to equip HSL 2 , which was due to open in 2002, with TBL2 and the other lines ( HSL 3 and HSL 4 ) with ETCS.
The TBL2 is a system for cab signaling . The following is displayed in the driver's cab:
- Top speed (braking curve)
- Target speed
- Target range
- Train speed
- Operating mode
- Help displays
TBL2 monitors:
- Line speed
- Speed limits (permanent and temporary)
- Specific restrictions for freight and other trains
- Breakpoint
- Dynamic braking profile
- Direction of travel
With regard to ETCS , TBL is a class B system (Class B system).
Individual evidence
- ↑ Investigation report on the Buizingen train accident on February 15, 2010, in Dutch ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. and in French ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , Section 7.7.
- ↑ a b c d e f To Van den Abeele, Johan Verschaeve: Train control and train protection in Belgium - today and tomorrow . In: signal + wire . tape 99 , no. 11 , 2007, ISSN 0037-4997 , p. 14-18 .
- ↑ More than 2,550 signals equipped with TBL1 +. In: infrabel.be. December 9, 2011, archived from the original on July 17, 2013 ; Retrieved May 7, 2016 .
- ↑ Train control system TBL1 + on the route between Aachen and the Belgian border . In: signal + wire . tape 106 , no. 7 + 8 , 2014, pp. 35-39 .
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