Interurban multiple unit (Queensland Rail)
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|Interurban Multiple Unit|
|Fleet numbers||101-110 (10 built)
121-124 (4 built)
161-188 (28 built)
The interurban multiple unit are a class of electric multiple unit used by Citytrain in and around South East Queensland Australia. The Interurban Multiple Unit comes in three subclasses: Sets 100-110 are known as the 100 series, Sets 121-124 are known as the 120 series, and the newest interurban sets (161-188), which are currently being built jointly by EDI and Bombardier are known as the 160 series.
An interurban multiple unit is a three-car set, operating similarly to an EMU and a SMU. Internally, the IMUs are different from the Suburban units, with luggage racks, mobility-access toilet and visual indicator signs provided inside the IMUs. Like most trains in the Citytrain fleet, two three-car IMUs can be attached together to form one six-car set.
100 and 120 series 
QR first introduced the IMU sets in 1996, in conjunction with the opening of the Gold Coast Line to Helensvale in the same year. The 120 series IMUs were introduced in 2002 for the opening of the railway line to Brisbane Airport
The trains are numbered IMU101–110 for Mk I units (100 Series) and IMU121–124 for Mk II units (120 series). These are fitted with high-backed seats, one toilet per unit and luggage racks in different configurations. The 100 series and 120 series are interoperable, and can both operate together in revenue service as a six-car set.
160 series 
QR ordered the new IMUs in 2005 in conjunction with the upgrade and duplication of the Gold Coast Line. The carriages for the 160 series are currently being manufactured by EDI and Bombardier.
The units are in service on the network as of May 2007. In early 2007 during safety checks, it was discovered that air-conditioning units on the trains were 10 mm too wide. This meant that they did not meet safety standards on a 4 metre length of track between Central and Brunswick Street stations.
On 31 January 2013 IMU 173 derailed at Cleveland station and ran into the station's Toilet Block. Only minor injuries were sustained.
- "QROTI - Travel Information - Fleet - IMU". Archived from the original on 1 December 2008. Retrieved 30 March 2010.
- "Premier views progress on new trains". Team Beattie. 7 September 2006.
- Pavey, Ainsley (24 February 2007). "Bungle halts trains". Courier Mail.
- "Rail funding to get budget boost". Brisbane Times. 28 May 2007.
- ^ "Downer EDI and Bombardier to supply rail cars to Queensland Rail under contract valued at $212M". EDI Rail. November 2004.
- ^ "New trains, new timetable". Queensland Government. 27 May 2007.
- QR awards multi-million-dollar Citytrain contract
- QRIG.org Motive Power Section
- Introducing the Citytrain Fleet