The present invention relates to a method and system of controlling the output of information to a driver. It provides to monitor at least one operating parameter of a vehicle and to estimate driver workload is estimated based on said at least one operating parameter, using a plurality of thresholds (HIGH, MEDIUM, LOW) defining driver workload ratings. Output of information to the driver is controlled based on the estimated driver workload rating. To ensure that also low priority information is outputted, the invention provides to periodically cycling through some or all of those defined driver workload ratings having a lower rating than the current estimated workload rating.