Most car manufacturers are increasingly looking to invest in autonomous driving technology, incorporating driver assistance functions with the aim of improving the safety of their products. Even though more and more vehicles are equipped with driver-assistance technologies, the idea of the vehicle itself performing the driving function completely makes most drivers fearful. A study was therefore carried out, applied to the Portuguese context, with the aim of studying the acceptance of this technology. An explanatory model was used, which incorporates dimensions from the technology acceptance model (TAM) and the main factors that contribute to technology acceptance were also identified. The results contribute to understanding the determinants of autonomous driving technology adoption.