词条 | Norwegian railway signaling | |||||||||||||||||||||||||
释义 |
The signalling system used on the rail transport in Norway is regulated by the Regulations of December 4, 2001 no. 1336 about signals and signs on the state's railway network and connected private tracks. The first signalling system on the Norwegian railway system was a mechanically operated semaphore system introduced at Drammen station in 1893. The first electrically operated light signal system was delivered by AEG in 1924. Today, only electrically operated light signals are used. Train radioBetween 1993 and 1996, NSB rolled out the analog train radio system Scanet. Developed by Ascom Radiocom, it was only installed on the primary railway lines. The system allows radio communication between a train dispatcher, and train drivers and other users involved in railway operations. Scanet was also connected to the automatic train control system.[1] However, several lines lack the system, including the Arendal Line, the Flåm Line, the Meråker Line, the Nordland Line, the Rauma Line, the Røros Line, the Inner Østfold Line, the northern part of the Gjøvik Line, and several tunnels along the Bergen Line and the Sørland Line. The Åsta accident in 2000 spurred the need to give all parts of the railway coverage with train radio.[2] On these lines, the dispatcher and drivers had to communicate using the Nordic Mobile Telephone (NMT 450) standard, a system which the operator Telenor discontinued in 2002.[3] Scanet was replaced by Global System for Mobile Communication – Railway (GSM-R) between 2004 2007, with the systems first being installed on the lines without Scanet.[4] The system, delivered by Nokia Siemens Networks, was on time and on budget, and made Norway one of the first countries to fully implement the system throughout Europe.[5] After GSM-R was fully implemented on 1 November, Scanet was gradually closed.[6] The new system has been characterized as simpler to use and giving better audio quality than Scanet.[7] The implementation cost 1.8 billion Norwegian krone and covers the entire network.[4] Means of signallingThe following means of signalling are used:
The fundamental meaning of the signal colors
Light signalsLight signals show one of the following aspects: Main signals
Fail safeIf one of the green lights in signal 22 fails, the indication becomes the lower speed signal 21 – this is fail-safe. Other nearby countries reverse the role of the single green aspect and double green aspect. Distant signals
Wrong-side failureIf the yellow light in signal 24 fails, the signal displays a higher speed indication, which would be a wrong-side failure. To prevent this, a current transformer in the lamp circuit monitors the current through the yellow lamp. If the yellow lamp fails, a relay will also switch off the green light and the signal becomes totally dark. A capacitor in the relay circuit ensures that the relay operation is a couple of seconds delayed, to prevent the relay operating for every blink. Hence, if the yellow lamp does suddenly fail, the green light will blink alone 1-2 times before it is switched off by the relay. Note: The animated picture of signal 24 is wrongly giving the impression that the yellow light is shown before the green one. This is not correct: The yellow and green lights are always switched on and off simultaneously, for every blink/flash. Warning systemsNorway uses the Ericsson ATP warning system, also used on Perth's suburban railway network. References1. ^{{cite journal |title=Train radio system for Norwegian State Railways |last=Solberg |first=Bjørn Olav |issue=4 |year=1994 |work=Telektronikk |publisher=Telenor |pages=73–81 |url=http://www.telenor.com/telektronikk/volumes/pdf/4.1995/Page_073-081.pdf |accessdate=24 October 2010 |archiveurl=https://www.webcitation.org/5tiypSO3C?url=http://www.telenor.com/telektronikk/volumes/pdf/4.1995/Page_073-081.pdf |archivedate=24 October 2010 |deadurl=yes |df= }} 2. ^{{cite news |title=NSBs nye togradio holder bare fem år |last=Enghaug |first=Paul |work=Aftenposten |date=11 February 2002 |page=11 |language=Norwegian}} 3. ^{{cite web |url=http://www.npt.no/pt_internet/venstremeny/hoeringer/frekvenser/NMT-450_sak200105378/hoeringssvar/Jernbaneverket.pdf |title=Kommentarer til høring– Fremtidig bruk at NMT-450 frekvensbåndene |last=Melsom |first=Jens |date=10 January 2002 |publisher=Norwegian Post and Telecommunications Authority |language=Norwegian |accessdate=24 October 2010 |archiveurl=https://www.webcitation.org/5tiyhm0OP?url=http://www.npt.no/pt_internet/venstremeny/hoeringer/frekvenser/NMT-450_sak200105378/hoeringssvar/Jernbaneverket.pdf |archivedate=24 October 2010 |deadurl=yes |df= }} 4. ^1 {{cite news |url=http://www.jernbaneverket.no/no/Nyheter/Pressemeldinger/2007/GSM-R-tatt-i-bruk-som-togradio/ |title=GSM-R tatt i bruk som togradio |date=1 November 2007 |work=Computer Weekly |accessdate=24 October 2010 }} 5. ^{{cite news |url=http://www.computerweekly.com/Articles/2007/11/19/228185/Norwegian-rail-system-migrates-to-mobile-network-to-improve.htm |title=Norwegian rail system migrates to mobile network to improve safety |last=Savvas |first=Antony |date=19 November 2007 |work=Computer Weekly |accessdate=24 October 2010 |archiveurl=https://www.webcitation.org/5tj2CChtd?url=http://www.computerweekly.com/Articles/2007/11/19/228185/Norwegian-rail-system-migrates-to-mobile-network-to-improve.htm |archivedate=24 October 2010 |deadurl=yes |df= }} 6. ^{{cite web |url=http://www.sjt.no/Lover-og-forskrifter/Horinger/endring-togframforingsforskriften-og-signalforskriften/Horing-endring-av-togfremforingsforskriften-og-signalforskriften/horingsbrev/ |title=Høring – Endring av togframføringsforskriften og signalforskriften bl.a. som følge av innføring av GSM-R som togradio mv. |date=6 July 2007 |publisher=Norwegian Railway Inspectorate |language=Norwegian |accessdate=24 October 2010 |archiveurl=https://www.webcitation.org/5tj3LkR2V?url=http://www.sjt.no/Lover-og-forskrifter/Horinger/endring-togframforingsforskriften-og-signalforskriften/Horing-endring-av-togfremforingsforskriften-og-signalforskriften/horingsbrev/ |archivedate=24 October 2010 |deadurl=yes |df= }} 7. ^{{cite journal |title=GSM-R |last=Nørbeck |first=Fredrik |issue=3 |year=2008 |work=Lokomotivmands Tidende |publisher=National Union of Norwegian Locomotivemen |pages=14 |url=http://www.lokmann.no/lt/2008/lt0308.pdf |accessdate=24 October 2010 |archiveurl=https://www.webcitation.org/5tj3kaXXG?url=http://www.lokmann.no/lt/2008/lt0308.pdf |archivedate=24 October 2010 |deadurl=yes |df= }} External links[https://web.archive.org/web/20070928105350/http://www.sjt.no/upload/documents/Signalforskriften/Signalforskrift.pdf Norwegian signalling rulebook] {{Rail transport in Norway}}{{Railwaysignalling}} 1 : Railway signaling in Norway |
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