Interior monitoring can enhance safety, comfort, and convenience for all vehicle occupants. Today these systems can detect driver distraction, signs of drowsiness, and even whether a child has been left behind in the vehicle and provide alerts the driver to these critical situations. By using some of the same base signals that are used to detect the functions defined above, we may be able to effectively reduce other unsafe driving behaviors. This may include driving while under the influence of alcohol or perhaps driving a vehicle when being subject to sudden sickness. These interior monitoring systems will be critical for determining if a driver is able to perform the dynamic driving task.