This literature review explored the performance capacity of drivers in relation to the availability of in-vehicle active safety systems and the demands placed on drivers in traffic. Driver distraction was examined in relation to two dimensions that characterize human behaviour and performance. The first dimension was arousal, which relates to the level of activation the driver used for simple and complex tasks to improve driving performance. The second dimension was adaptivity which is a factor since driving is a control task and drivers must continuously adapt to the changing road environment. Authors suggested that these two dimensions can increase understanding of distracted driving behaviour, and that both active safety systems and the traffic environment can influence driving performance when drivers are engaged in a secondary task.
Aust, M. L., Eugensson, A., Ivarsson, J., & Petersson, M. (2011). Thinking About Distraction–A Conceptual Framework for Assessing Driver-Vehicle On-Road Performance in Relation to Secondary Task Activity. In 22nd International Technical Conference on the Enhanced Safety of Vehicles (ESV) (No. 11-0320).