Iris 320 is a modified TGV train operated by SNCF International as a dedicated track recording train for high-speed railways.[1] The train can run at 320 kilometres-per-hour and consists of two power cars and eight trailers coaches providing 160 metres of laboratory space. It was converted from former SNCF TGV Réseau passenger train number 4530.
The train primarily monitors the whole of the French high-speed LGV network every 15 days.[2] In addition it surveys other main lines in France operating at above 160 km/h[2] and the HSL 1 high-speed line in Belgium for Infrabel.
Once every two months, Iris 320 takes a survey of the Channel Tunnel for Eurotunnel (since December 2010) and of High Speed 1 for Network Rail (CTRL) in the United Kingdom (since 4/5 May 2011).[3] The cross-channel trips are diesel-hauled by Eurotunnel Class 0001 locomotives and undertaken at 100 km/h.[4][5]
Media related to [//commons.wikimedia.org/wiki/Category:Iris_320 Iris 320] at Wikimedia Commons
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