The majority of single-deckers have a length of up to 12 metres, although some exceptions of longer buses exist. They also typically weigh between 11 and 14 tons.
The unladen weight of New Routemasters entering service is 12.4 tonnes and the gross vehicle weight, as for all double-deck buses, is a maximum of 18.0 tonnes.
The unladen weight of New Routemasters entering service is 12.4 tonnes and the gross vehicle weight, as for all double-deck buses, is a maximum of 18.0 tonnes.