"banana" for having arrived green and consumed yellow); the inner side of the doors were originally left green, but later repainted to white. They were retrofitted with windows that can slide open to better adjust to hotter continental summers. A doorbell was added that rings before departure. The automatic closing of the doors after 4 seconds was deactivated for a time but was later reintroduced. As part of the regular maintenance cycle, a small revamp at BKV's rail vehicle maintenance company (BKV VJSz) saw the cars retrofitted with internal and external Vultron LED displays. Further purchases The positive experience of TW6000 operation in Budapest convinced BKV to purchase further cars of the same type. In 2011, another 16 TW6000 cars arrived to Budapest partly from Hanover and partly from The Hague (see below). A further four cars arrived to BKV VJSz in order to provide spare parts. An additional shipment was due from late 2011, also including cars from the 6100 series. The last shipment was in 2015-2016. Today, most of the TW 6000 tramcars that have been built are owned by BKV: 113 vehicles excluding the four at BKV VJSz. However, the arrival of low-floor CAF Urbos 3 trams to the Budapest network allowed for the withdrawal of many Ganz CSMG trams from regular service. Low-floor service was introduced on line 3, and TW6000's showed up on other lines. From 2016 January onwards, TW6000's operate on tramlines 3 (partially), 24 (partially), 28 (partially), 28A (partially), 37, 37A, 42, 50, 51, 51A, 52, 62, 62A, 69. Nowadays, the main concern about these cars is their high floor level and moving stairs with mechanical sensors that do not fulfill accessibility requirements and make it difficult for the elderly, and people with prams, to get on and off. Despite this, its heated passenger compartment, good noise insulation, vibration damping and seamless acceleration mean a higher standard of comfort than some other tram types in Budapest can provide. TW 6000 in the Netherlands The Hague In 2002, eight TW 6000 units were sold to HTM, the public transport operator of The Hague in the Netherlands, where they were in service on tram line 11 to Scheveningen. They were withdrawn in 2005 and stored at Depot Lijsterbesstraat. They were eventually sold to BKV of Budapest, the last TW 6000 leaving The Hague on October 7, 2010. Houten Earlier, in 2000, HTM ordered two TW