 | | The primary zone immediately in front of the driver contains instruments, warning lamps and the stalks for the headlamps, direction indicators, wipers and washers. The secondary zones on the sides contain switches for the lighting and the controls for the heating and ventilation system |  | | In the Saab 900 the controls and instruments are grouped in the driver's field of vision and the instruments are located at a high level for fast reading. The driver can reach all the controls without taking his eyes off the road. | Drivers must be given every opportunity to carry out all operations conveniently, safely and quickly. Driver environmentIn the Saab 900, the driver can reach all controls without changing his seating position or taking his eyes off the road. The controls and instruments are carefully arranged and the instrument dials are at a high level, where they can be read at a glance. The logical design of the instruments substantially reduces the risk of errors in hectic or hazardous traffic situations. Sensible location of controls Due to a sudden change in the traffic situation, the driver may instantly need to use the headlamp flasher or horn, or to switch the wipers to maximum speed-without fumbling for the controls and possibly losing command of the situation. So the stalks and switches for all important functions are close at hand-at the driver's fingertips. The controls are operated according to simple, easily comprehensible logic. The front seat passenger (or a driver who is unaccustomed to the car) must not be able to switch off the headlamps by mistake while the car is under way. The lights are therefore controlled by a rotary switch located on the driver's door side. The controls for the radio, heating and ventilation, cigarette lighter, rear window demister and hazard warning lights are arranged towards the centre of the facia. |