 A destination box was sometimes fitted.Usually this was just below the windscreen, above the level of the headlights; on some models, mainly front-engined Bedfords and Fords, the destination box was mounted between the headlights.In either position, difficulties were found with some chassis having a high-set front-mounted radiator (in particular those manufactured by Bristol), where the position was needed for the radiator grille, so on these the destination box was above the windscreen, and this was known as the Bristol Dome.