The Volvo B7LT Double deck is a modification of the B7L single deck bus chassis. It provides two options: the 10.5m 2-axle (B7L) and the 12m 3-axle (B7LT).
The 10.5m variant was developed in 2000, whereas the 12m version was first built in 2001. Apart from a few operators in the UK, two operators Denmark (Arriva and City-Trafik) also operate similar buses. (kilde: Volvo Buss AB)