Moderus Alfa
Introduction '''Moderus Alfa''' – a one-section one-directional high-floor tram model developed by retrofitting Konstal 105N/105Na tram, manufactured by Modertrans Poznań. These trams are operated in Silesian Interurbans, Poznań and Szczecin.
History In years 1973–1992 there were 980 units of Konstal 105N tram and 1443 units of Konstal 105Na tram produced which made them the most common used tram model in Poland. In 1990s the trams were so worn out and obsolete, that their operators had decided to modernize them.On December 31, 2005, MPK Poznań – the public transport operator that previously modernized the trams by itself – created subsidiary company called ''Modertrans Poznań'' on the basis of Bus Repair Company in Biskupice (). Apart from that, scope of activity of Modertrans was expanded by trams modernization. In the initial period the main recipient of modernized trams was MPK Poznań. However, in December 2007 the first modernized vehicles were also delivered to Silesian Interurbans.In 2011 the successor of Moderus Alfa was created – the three-section Moderus Beta MF 02 AC. That tram model is an equivalent of two-vehicle composition of Moderus Alfa, but in contrast to Moderus Alfa there are no old parts (it is entirely new vehicle) and has a low-floor module, thanks to which is a single-space unit and adapted to the transport of disabled people in wheelchairs.
Construction The Moderus Alfa trams are created through sophisticated modernization of old vehicles of Konstal 105N/105Na generation. The modernized design of vehicles was developed by EC Engineering from Kraków and applied for the first time in HF 04 AC and HF 05 models.Individual versions differ significantly in the scope of modernization:+ Scope of the modernizing of individual versions of Moderus Alfa trams Type Interior Frontand back Drive Doors Numberof doors Air conditioning ofmotorman's cabin Other HF 01        HF 02 DK        HF 03 L        HF 04 AC        HF 05        HF 07        HF 09        HF 10 AC        HF 11 AC
Deliveries  Country Place Operator Type Years of delivery No. of units  Poznań MPK Poznań HF 01 2006 22 HF 02 DK 2006 2 HF 03 L 2007 2 HF 04 AC 2008 4 HF 07 2008–2010 36 Katowice urban area Tramwaje Śląskie HF 05 2007 2 HF 11 AC 2012–2014 75 Szczecin Tramwaje Szczecińskie HF 09 2008 2 HF 10 AC 2011–2013 12 Total number: 157
Exploitation === Poznań ===In 2006, Modertrans have modernized 24 Konstal 105N/105Na trams for MPK Poznań. In scope of the modernization the 22 units of HF 01 model and 2 units of HF 02 DK model were made. Between July and August 2007 2 units of HF 03 L training tram were delivered.In years 2008–2010 MPK received 4 units of HF 04 AC model and 36 units of HF 07 model. Because of the technological novelties, putting the first 4 trams into service was delayed on about six months – it was planned that the first tram would be ready to carry passengers on December 2007.=== Katowice urban area ===In December 2007 Modertrans passed on 2 modernized trams, designated as HF 05 to Tramwaje Śląskie. One of them has been associated with the depot in Gliwice, while the other one went to the depot in Będzin.On July 30, 2012, Tramwaje Śląskie signed a contract with Modertrans and MPK-Łódź consortium for modernizing 45 units of 105Na trams and delivering parts for modernizing another 30 units that was planned to happen in Repair and Service Department of Tramwaje Śląskie (). On December 17, Tramwaje Śląskie exhibited the first of modernized trams by Modertrans and MPK-Łódź consortium, and in May 2013 the first tram modernized by ZUR was ready. On November 18, 2013 the last of 45 units modernized by Modertrans and MPK-Łódź consortium was delivered to Silesia.Trams modernized by Modertrans and MPK were designated as 105N HF 11 AC and the ones modernized by ZUR as 105NF.=== Szczecin ===In 2008 Tramwaje Szczecińskie bought two bodies of HF 09 trams, that were equipped in local workshops.In December 2010 subsequent 2 Moderus bodies with bogies were transported from Poznań to Szczecin, which were completed and equipped in Szczecin. On June 22, 2011 a composition of the two streetcars was exhibited.On June 7, 2011 the operator signed another contract with Modertrans – that one was for delivery of 10 bodies and 20 drive bogies.In total, Tramwaje Szczecińskie bought 7 compositions of two Moderus Alfa streetcars that were assigned to ''Golęcin'' depot. 4 units were paid with the operator's own funds and 10 remaining as part of co-financing from the European Union.
See also * Konstal 105NaDK* Moderus Beta* Moderus Gamma
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