The Volvo B9RLE is a 9.4-litre engined tri-axlelow-entrysingle-decker bus and double-decker bus chassis manufactured by Volvo between 2010 and 2013. The double-decker was available in either closed top or open top form. It was introduced as an interim replacement for the soon to be discontinued B12BLE in the short gap of years before they had the Euro VI compliant B8RLE ready. At the same time they introduced a tri-axle variant of the B7RLE, but in Volvo's home markets the 290 bhp that the D7E produces is considered insufficient for a 15-metre bus.
The most likely reason for introducing the B9RLE a whole year before the end of production for the B12BLE was for the introduction of the first prototypes of the Volvo 8900LE in late 2010, which was also the body that most B9RLE received. Some were also bodied as open topdouble-deckersightseeing buses with the Unvi Urbis 2.5 DD body.