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Iris 320 4530Iris 320 with pantograph monitoring dome on top.
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 (199 mph) and consists of two power cars and eight trailer coaches, providing a 160-metre (524 ft 11 in) long laboratory.[1] It was converted from former SNCF TGV Réseau passenger train number 4530.
The train is primarily used for monitoring 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 (99 mph)[2] and the HSL 1 high-speed line in Belgium for Infrabel.
^ abUniversity of Birmingham (2008-11-04). D4.4.1 – Rail Inspection Technologies(PDF) (Report). Innotrack. p. 20. Retrieved 2011-06-07. SNCF ... "IRIS 320" car that can achieve speeds up to 320 km/h. These inspections are performed every 15 days to check for visual surface defects over high speed lines as well as high standard main line (speed ≥ 160 km/h).
^"United Kingdom: Track Geometry Checks". SNCF International. Archived from the original on 2011-08-12. Retrieved 2011-06-07. SNCF International … with Eurotunnel and .. Network-Rail (CTRL) are … carrying out Eurotunnel monitoring runs using the Iris 320 train and extending them as far as London St Pancras.
^"Maintenance"(PDF). Inspecting the infrastructure at 100 km/h. Annual Report (Report). Eurotunnel Group. 2010. p. 24. Archived from the original(PDF) on 2011-08-07. Retrieved 2011-06-07. IRIS 320 measuring train … since December 2010, … inspecting the Channel Tunnel, pulled by a Eurotunnel diesel locomotive at 100 km/h … every two months
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