Abstract: An apparatus and method are disclosed for real-time assessment of driver workload by a vehicle device. To determine driver workload, the system monitors the driver interaction with the vehicle device. The driver interaction is then used to determine an estimated driver workload based on the driver interaction. In one embodiment, the vehicle device has one or more buttons configured to be pressed by the driver and each of the one or more buttons has an assigned driver workload value. The system sums the workload value of the buttons pressed by the driver over a moving time window to determine the estimated driver workload.

Abstract: Methods and apparatus are provided for adaptively locking out a display on a vehicle device based on user interaction. A method begins by counting a number of user initiated display changes with an event counter, and timing the user initiated display changes with an event timer. The method continues by comparing the number of user initiated display changes in the event counter to an allowable number of user initiated display changes corresponding to the time in the event timer, and disabling the display for a display lockout time period if the number of user initiated display changes exceeds the allowable number of user initiated display changes.