{{Short description|Queensland Rail EMU interurban trainsets}} {{see also|Suburban multiple unit}} {{Use Australian English|date=May 2026}} {{Use dmy dates|date=May 2026}} {{Infobox train |name = Interurban multiple unit |image = IMU 184.jpg |caption = IMU 184 arriving {{rwsa|Murrumba Downs}} station |interiorimage = Queensland Rail IMU160 aisle and seats Platform 3 Roma Street Railway Station Brisbane P1010511.jpg |interiorcaption = Interior of an IMU 160 |manufacturer = {{plainlist| *Walkers Limited (100 and 120) *Downer EDI Rail/Bombardier (160) }} |factory = Maryborough |yearconstruction = {{plainlist| *1996–1997 (100) *2001–2002 (120) *2007–2011 (160) }} |numberbuilt = {{plainlist| *30 carriages (100) *12 carriages (120) *84 carriages (160) }} |formation = 3-car sets |fleetnumbers = {{plainlist| *101–110 (100) *121–124 (120) *161–188 (160) }} |operator = Queensland Rail |trainlength = {{plainlist| *{{convert|72.40|m|ftin|abbr=on}} (100 & 120) *{{convert|72.42|m|ftin|abbr=on}} (160)<ref name=bbd/> }} |carlength = {{plainlist| *{{convert|24.21|m|ftin|abbr=on}} (160 – end cars) *{{convert|24.00|m|ftin|abbr=on}} (160 – intermediate cars)<ref name=bbd>{{cite web|url=https://www.bombardier.com/en/transportation/projects/project.emu-brisbane-australia.html|title=Electric Multiple Unit - Brisbane, Australia|access-date=21 July 2022|website=Bombardier|archive-url=https://web.archive.org/web/20180113154208/https://www.bombardier.com/en/transportation/projects/project.emu-brisbane-australia.html|archive-date=13 January 2018|url-status=dead}}</ref> }} |width = {{convert|2.7|m|ftin|abbr=on}} |height = {{convert|3.9|m|ftin|abbr=on}} |maxspeed = {{plainlist| *{{convert|140|km/h|mph|abbr=on}} (100 & 120) *{{convert|130|km/h|mph|abbr=on}} (160) }} |weight = {{plainlist| *{{convert|131.8|t|abbr=on}} (100) *{{convert|130.4|t|abbr=on}} (120) *{{convert|128.2|t|abbr=on}} (160) }} |traction = {{plainlist| *100: ABB MICAS-S2 GTO-VVVF<ref>{{cite web|title=MICAS-S2 distributed traction control for motive power units|date=May 1995|publisher=ABB|url=https://library.e.abb.com/public/2aa250979b494421b050a2bfcb14c6fe/micas32-en.pdf|quote=SMU+IMU|access-date=31 January 2023|archive-date=31 January 2023|archive-url=https://web.archive.org/web/20230131053841/https://library.e.abb.com/public/2aa250979b494421b050a2bfcb14c6fe/micas32-en.pdf|url-status=dead}}</ref> *120 and 160: Bombardier MITRAC IGBT-VVVF}} |traction motors = 8 × {{convert|180|kW|abbr=on}} 3-phase AC induction motor |poweroutput = {{convert|1.44|MW|abbr=on}} |electricsystem = {{25 kV 50 Hz}} (nominal) from overhead catenary |collectionmethod = Pantograph |uicclass = {{plainlist| *Bo′Bo′+Bo′Bo′+2′2′ (100) *Bo′Bo′+2′2′+Bo′Bo′ (120/160) }} |brakes = Mix of electro-pneumatic and regenerative braking |coupling = Scharfenberg Type 10 |multipleworking = {{plainlist| *Within type *With SMU260 (160 only) }} | gauge = {{track gauge|1067mm|lk=on}} }}
The '''Interurban multiple units''' ('''IMU''') are a class of electric multiple units manufactured by Walkers Limited/Downer EDI Rail, Maryborough for Queensland Rail's Citytrain division between 1996 and 2011. The IMU is divided into three subclasses, units 101-110 as the '''100 series''', units 121-124 as the '''120 series''', and units 161-188, as the '''160 series'''.
==Design== The Interurban Multiple Units are a long-distance optimised version of the Suburban Multiple Units. Internally, the IMUs differ from the SMUs, being fitted with larger seats, luggage racks and mobility-access toilets.<ref>{{cite web|url=https://www.qroti.com/travelinfo/qr/fleet/imu/|title=QROTI - Travel Information - Fleet - IMU|access-date=30 March 2010|archive-url=https://web.archive.org/web/20081201122617/https://www.qroti.com/travelinfo/qr/fleet/imu/|archive-date=1 December 2008}}</ref> Like most trains in the Citytrain fleet, two three-car IMUs can be coupled to form one six-car unit.<ref>{{cite web|url=https://www.queenslandrail.com.au/forcustomers/accessibility/our-trains/smu-200|title=SMU 200 layout|publisher=Queensland Rail|access-date=14 May 2026}}</ref>
==History==
===100 series=== To provide rolling stock for the new Gold Coast line to Helensvale, in 1993 a contract for four 100 class units was awarded to Walkers Limited, Maryborough. The 100 were manufactured by Walkers Limited, Maryborough in partnership with ABB. The first four IMU100s, 101 to 104 entered service in 1996 before the opening of the new line. As these were never going to be adequate to operate all services on the line, in July 1995 a further six were ordered. They were delivered in 1997.<ref>"Queensland's Interurban Multiple Units" ''Railway Digest'' October 1998 pp. 26-28.</ref> They feature luggage racks, disabled access toilets, and high-backed cloth seating.
[[File:IMU103105.jpg |center|thumb|200x200px| IMU105 at Coomera in December 2016]]
===120 series=== In 1999, four 120 series units were ordered for the Airtrain line to Brisbane Airport.<ref>"Brisbane Airport Rail Link Go-Ahead" ''Railway Digest'' April 1999 p. 15.</ref>
They entered service in 2001, fitted with high-backed seats with a head cushion as an extension as the seat design is based on the SMU 220s, one toilet per unit and luggage racks in different configurations due to the interior design differences to its predecessor. The 100 series and 120 series are interoperable, and used to operate together in revenue service as six-car units, but no longer do so due to electrical and mechanical differences.
The 120 series were the final batch of trains manufactured by Walkers Limited before being absorbed by Downer Group, Maryborough in partnership with ADtranz, which was likewise taken over by Bombardier.
[[File:IMU122123.jpg |center|thumb|200x200px|IMU123 at Coomera in December 2016]]
===160 series=== In 2004, Queensland Rail ordered sixteen 160 series units to provide extra rolling stock in conjunction with the upgrade and duplication of the Gold Coast line.<ref>{{cite web|date=2 November 2004|title=Downer EDI and Bombardier to supply rail cars to Queensland Rail under contract valued at $212M|url=http://www.downeredi.com.au/main.cfm?DivisionID=5&feMenuID=279&NewsID=355|url-status=dead|archive-url=https://web.archive.org/web/20060824095140/http://www.downeredi.com.au/main.cfm?DivisionID=5&feMenuID=279&NewsID=355|archive-date=24 Aug 2006|access-date=5 May 2024|website=EDi Rail}}</ref> The 160 series were manufactured by Downer EDI Rail, Maryborough in partnership with Bombardier Transportation. These trains are similar in design to the Transperth B-series EMU, V/Line VLocity DMU, and Adelaide Metro 4000 class EMU trains with alterations to the headlights to complement with the rest of the Citytrain fleet. These trains are interoperable with the 260 series Suburban Multiple Units as they have almost identical specifications.
In early 2007, during safety checks, it was discovered that air-conditioning units on the trains were 10 millimetres too wide for the loading gauge.<ref>{{cite news|url=https://www.couriermail.com.au/news/queensland/bungle-halts-trains/story-e6freoof-1111113052829|archive-url=https://web.archive.org/web/20110811094831/https://www.couriermail.com.au/news/queensland/bungle-halts-trains/story-e6freoof-1111113052829|title=Bungle Halts Trains|newspaper=The Courier-Mail|publisher=News Corp|last=Pavey|first=Ainsley|date=24 February 2007|archive-date=11 August 2011}}</ref>
On 28 May 2007, the first of the new IMUs entered service on the Gold Coast line.<ref>{{cite news|url=http://www.brisbanetimes.com.au/news/queensland/rail-funding-to-get-budget-boost/2007/05/28/1180205111655.html|newspaper=Brisbane Times|title=Rail Funding to Get Budget Boost|date=28 May 2007|access-date=31 March 2010|archive-date=2 October 2012|archive-url=https://web.archive.org/web/20121002185021/http://www.brisbanetimes.com.au/news/queensland/rail-funding-to-get-budget-boost/2007/05/28/1180205111655.html|url-status=dead}}</ref>
On 31 January 2013, IMU173 derailed at Cleveland station and ran into the station's toilet block, injuring 14. Only minor injuries were reported.<ref>{{cite news|date=31 January 2013|title=Commuter train derails in Queensland|url=https://www.9news.com.au/national/queensland-train-derails-at-cleveland/906e3355-9349-419e-baf3-cc261d10c190|access-date=5 May 2024|agency=9 News}}</ref> The damaged car IM5173 was eventually repaired and returned to service.
center|thumb| An IMU 160 (IMU167)
====Refurbishment==== Since July 2023, the IMU160s have been undergoing a major refurbishment. Twenty-two units have already been completed under this scheme with new vinyl flooring, better Wi-Fi, and the driver B carriage having mostly sideways seating.<ref>{{cite web|title=Multi-million-dollar overhaul of Queensland Rail trains on-track|url=https://www.queenslandrail.com.au/aboutus/mediacentre/multi-million-dollar-overhaul-of-queensland-rail-trains-on-track-(ministerial-statement)|publisher=Queensland Rail|date=4 November 2023|access-date=14 May 2026}}</ref>
==Gallery== <gallery widths=200 mode=packed> File:Queensland Rail IMU100 Transverse Seating.jpg|Refurbished IMU 100 interior File:Queensland Rail IMU120 Transverse Seating.jpg|Refurbished IMU 120 interior </gallery>
==References== {{Reflist|30em}}
==External links== {{commons category-inline|QR IMU 100 series}} {{commons category-inline|QR IMU 120 series}} {{commons category-inline|QR IMU 160 series}} *[https://web.archive.org/web/20061008065725/http://www.corporate.qr.com.au/Corporate/News_Room/Archive/News_Articles/091104_citytrain_contract.asp QR awards multi-million-dollar Citytrain contract] *[https://web.archive.org/web/20090603075311/http://www.qrig.org/motive-power/multiple-units/citytrain-edi-bombardier-interurban-multiple-unit-100-series-imu100/ QRIG.org Motive Power Section] *[https://web.archive.org/web/20131110124342/http://www.queenslandrail.com.au/AboutUs/MediaCentre/Fleet/Pages/imu100.aspx Interurban Multiple Unit (IMU100) Queensland Rail] *[https://web.archive.org/web/20130426091038/http://www.queenslandrail.com.au/AboutUs/MediaCentre/Fleet/Pages/imu120.aspx Interurban Multiple Unit (IMU120) Queensland Rail] *[https://web.archive.org/web/20130426091047/http://www.queenslandrail.com.au/AboutUs/MediaCentre/Fleet/Pages/imu160.aspx Interurban Multiple Unit (IMU160) Queensland Rail] *[https://qrig.org/motive-power/self-propelled-passenger-stock/electric-multiple-units/edibombardier-interurban-multiple-unit-100-series-imu100 Specifications (100 series)] *[https://qrig.org/motive-power/self-propelled-passenger-stock/electric-multiple-units/edibombardier-interurban-multiple-unit-120-series-imu120 Specifications (120 series)]
{{QueenslandLocos|state=collapsed}}
Category:Electric multiple units of Queensland Category:Queensland Rail City network Category:Train-related introductions in 1996 Category:25 kV AC multiple units Category:Bombardier Transportation multiple units Category:Walkers Limited multiple units