Fully automated self-driving cars, with expected benefits including improved road safety, are closer to becoming a reality. Thus, attention has turned to gauging public perceptions of these autonomous vehicles. To date, surveys have focused on the public as potential passengers of autonomous cars, overlooking other road users who would interact with them. Comparisons with perceptions of other existing vehicles are also lacking. This study surveyed almost 1,000 participants on their perceptions, particularly with regards to safety and acceptance of autonomous vehicles. Overall, results revealed that autonomous cars were perceived as a "somewhat low risk" form of transport and, while concerns existed, there was little opposition to the prospect of their use on public roads. However, compared to human-operated cars, autonomous cars were perceived differently depending on the road user perspective: more risky when a passenger yet less risky when a pedestrian. Autonomous cars were also perceived as more risky than existing autonomous trains. Gender, age and risk-taking had varied relationships with the perceived risk of different vehicle types and general attitudes towards autonomous cars. For instance, males and younger adults displayed greater acceptance.Whilst their adoption of this autonomous technology would seem societally beneficial -due to these groups' greater propensity for taking road user risks, behaviours linked with poorer road safetyother results suggested it might be premature to draw conclusions on risk-taking and user acceptance. Future studies should therefore continue to investigate people's perceptions from multiple perspectives, taking into account various road user viewpoints and individual characteristics.of such vehicles (Bansal et al., 2016;JD Power, 2013;Kyriakidis et al., 2015;Schoettle and Sivak, 2014;Smith, 2016). Perceptions from an external point of view, e.g. as pedestrians in an area with autonomous cars, have received little attention to date. Likewise, there has been little attempt to compare perceptions of autonomous cars with perceptions of other, existing vehicles. This paper reports findings of a survey with participants resident in the UK investigating perceptions of autonomous cars, particularly with regards to road safety and acceptance. Perceptions are compared in relation to road users (i.e. pedestrians as well as occupants of both human-operated and autonomous vehicles), risk (taking and perception), and participant gender and age.
Road safetyThe act of driving is complex. Several motor and cognitive tasks must be performed, sometimes in quick succession, sometimes simultaneously, with drivers having to interact with and react to a variety of vehicular parameters, motorist and pedestrian behaviours, all in varying weather, lighting and road surface conditions. Due to these challenges, it is perhaps not surprising that things can go wrong, and the cost when it does is high. Each year, around the world, approximately 1.25 million people are killed and a further 20 to 50 mill...