Solaris Urbino 18 is a low-floor articulated version of the Solaris Urbino series buses designed for public transport, produced by the Polish company Solaris Bus & Coach from Bolechowo near Poznań in Poland. It is the second most popular (after the Solaris Urbino 12) Solaris model in terms of the number of units sold. Since 2005, the third generation of the Urbino 18 is produced.