The cognitive load on a vehicle driver is estimated by combining information such as the sensed driving conditions with historical data. When the cognitive load increases there may be a corresponding decrease in the amount of information supplied to the driver so that the driver can concentrate without unnecessary distractions. This potentially improves safety when encountering difficult driving conditions. The information and conditions which may be taken into account when establishing the cognitive load include weather, traction, road complexity, accident history and the presence of other vehicles. The information which is selected for audible or visual display may include vehicle performance, engine conditions, usage data, GPS position information, audio system information and warning information.
Method and device for supplying information