ABSTRACT
A central goal within transportation safety is that travelling and mobility should be as safe and efficient as possible. In an effort to achieve this goal, transportation safety professionals often focus on developing safety systems (e.g., road safety countermeasures) centred on the vehicle or the environment with the expectation that drivers will learn to interact with and adapt to the newly developed safety systems in ways that are consistent with their intended goals. However, drivers have a remarkable ability to adapt to safety systems in ways that are unanticipated by those who develop the safety systems; this adaptation can serve to meet the needs of the driver but be counterproductive to safety and efficiency. Within this chapter and book, these unanticipated changes are generally referred to as behavioural adaptations.
