The Scania OmniCity is an integrally constructed transverse-engined low floor city bus that was available from Scania on the European market between 1997 and 2012. The OmniCity was introduced in September 1996 as the first product based on the 4-series bus range. The first prototypes were built in the former DAB plant in Silkeborg, Denmark, and serial production continued there in 1997, joined by Scania's plant in Katrineholm, Sweden. From 1999 it was also built at the plant in Słupsk, Poland. Production in Silkeborg ended in early 2000, and Katrineholm in 2004, with only a few test buses in 2005 to 2006. Since then all have been built in Poland. In 2006, the OmniCity was upgraded from the 4-series to the new N-series, which also included a thorough facelift, with the large rectangular front headlamps being replaced by smaller, round items, and further tweaks carried out to the rear styling. The Scania Citywide was launched in 2011 as a replacement for the OmniCity, except for the right-hand drive markets, where Scania have chosen to rely on external bodywork manufacturers, including Alexander Dennis. With a total of more than 2200 units for the United Kingdom, the last few OmniCities were built in 2012. Europe The single-decker and articulated Scania OmniCity were popular in continental Europe. Omnicities were popular in most of the Nordic countries. In Norway, Omnicities were delivered to operator Norgesbuss AS in 2006 for service in the capital Oslo. Some of these would later be sold on for further use in the Polish city of Koszalin in 2015. Omnicities were also sold to Concordia Bus in Norway, Linjebuss in Sweden, the Helsinki Public Transport Authority and to Strætó bs in Reykjavík. OmniCities were also sold to the Estonian cities of Tallinn and Tartu. OmniCities were also popular in many regions of Poland. 108 rigid OmniCities were delivered to Warsaw operator PKS between 2007 and 2008. Two buses replacing accident-damaged models were also delivered to PKS in 2011. In Kraków, 15 articulated OmniCities were delivered from 2001 to 2003, while OmniCities also entered service in the cities of Koszalin, Konin, Grudziądz and Słupsk, where a batch of OmniCities running on ethanol fuel were delivered in 2007. In France, Parisian municipal operator RATP ordered over 300 OmniCities from 2006 to 2010 in both rigid 12m and articulated 18m lengths, the latter of which were operated on 'Orlybus' express services to Orly