AB Articulated single-deck bus
AC Articulated coach
B Rigid single-deck bus
DP Dual purpose, usually coach seats in a bus shell
L Lowbridge double-decker with side sunken gangway upstairs. All other double-deckers are H (highbridge) regardless of overall height.
O Permanent open-top
CO Convertible open-top
PO Partial open-top
For double-deckers, this is shown with the upper deck capacity first (e.g. 43/30, indicating 43 ‘over’ 30. Where the split is not known, a total figure (e.g. 73) is shown in the same style as for single-deckers. The total seating capacity shown includes all fixed and tip-up seats. The vehicles themselves may show other permutations of seats, standing spaces and wheelchair capacity.