Signalling & telecoms Istanbul


Habipler Basaksehir


Olympic Park Ikitelli


M5 Bagcilar M3 T1 Halkali


to Beylikdüzü Airport/


Yesilköy Esenler


Otogar M1


Zeytinburnu M1 M1 Bakirköy Topkapi T1 9 Mescid-i Selam T4


Seyrantepe Maslak depot


Alibeyköy


Taksim M2 10


13


4 ‡ 5


2 Kazilicesme


TCDD lines Metro


IRJ


Light metro Tram


installed at each end of the immersed tube, and emergency cross passages between the two running tunnels are located at 125m intervals in the immersed tube and every 200m in the bored tunnel. The underground stations have 270m-long island platforms. Yenikapi will become a major interchange on the European side as metro lines 1 and 2 are both being extended south to terminate there. Sirkeci will connect with tram Line 1, and Üsküdar will interchange with metro Line 6, construction of which has just started (see panel on p50). The ƒ580m rolling stock contract for 34 10-car and 20 five-car emus was awarded to Hyundai Rotem in November 2008. About 70% of the fleet has been built so far, but only six out of 10 trains available will be needed initially to operate the underground shuttle. The so-called commuter rail contract, which includes the tunnel, went to a joint venture of Obrascon Huarte Lain (OHL) and Invensys Rail Dimetronic. OHL is responsible for the track and catenary, while Invensys Rail takes care of the signalling and telecommunications. The reconstruction of the existing lines is comprehensive and involves dismantling the existing railway section by section, which started in April with the eastern end of the line from Pendik to Gebze. As a result, Istanbul is now isolated from the rest of the Turkish rail network until reconstruction is completed. The work involves removing the existing double track, signalling and electrification and laying a new three-track electrified railway. Two tracks will be used by Marmaray


48


Open Being built


7


Osmanbey Besiktas ‡


1 Levent Sisli


8 Kabetas 6


Haydarpasa Kadiköy


Sea of Marmara Planned N 02 km to Gebze


commuter trains as well as freight trains, while the third track will be for high-speed trains: the Ankara - Eskisehir high-speed line is currently being extended towards Istanbul and is due to open in 2015. The third track will have 10 passing loops at 4.5km intervals on the Asian side, but only three loops are needed on the European side. The original plan was for the tunnel to be used exclusively by commuter trains during peak hours, with high- speed trains allowed to run though the tunnel at other times, and freight trains


M4 Kartal to


Ibrahimaga M4


T3 Atatürk OS M2 4 Levent Gayrettepe


1 Aksaray 2 Yenikapi


3 Sehzadebasi 4 Unkapani 5 Eminönü 6 Sirkeci 7 Karaköy 8 Tünel


9 Edirnekapi 10 Sishane ‡ Funicular


Üsküdar Ümraniye M6


Sögutlücesme Göztepe


Depot M6


to Cekmeköy


restricted to the night. However, TCDD has yet to make a final decision on whether high-speed trains will terminate in Haydarpasa on the Asian side or run under the Bosphorus to the European side and beyond. Clearly high-speed passengers would benefit from being able to join trains on the European side, but this could reduce the capacity of the commuter service. Invensys Rail is responsible for


removing the old signalling and telecommunications equipment, design and supply of a new system comprising ERTMS Level 1, CBTC for both the infrastructure and rolling stock, CTC, hot-axle detectors, a Scada system, telecommunications including GSM-R radio, public address, passenger information and CCTV, and staff training. Invensys will maintain the equipment for two years and has an option to extend the maintenance contract for another five years. On the surface, train detection will be by jointless track circuits, and the two commuter tracks will be fitted with both CBTC and ERTMS, while the third track will only have ERTMS. The tunnel will have both types of train control but train detection will be by axle counters. Fall-back lineside signalling will be installed throughout the Marmaray line. Signals will be mounted on conventional lineside masts in the immersed tube as it is forbidden to drill holes in the walls for obvious reasons. The Hyundai Rotem fleet will solely


Track is in place at Üsküdar station which will have a 270m-long island platform and is designed to cope with large passenger flows.


IRJ August 2012


Golden Horn


Bosphorus


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