To share or not to share? A Sequential SEM Analysis of Shared and Non-Shared Autonomous Vehicle Adoption Intentions across Europe

Abstract

Cooperative, Connected and Autonomous Mobility (CCAM) promises to improve transport efficiency and sustainability, yet people’s intention to use them remains unclear. This study investigates socio-cultural and psychological determinants of CCAM adoption across six European countries, focusing on factors such as Technological Affinity and Trust in automation. It examines both shared and non-shared autonomous mobility solutions using an integrated model based on the Technology Acceptance Model (TAM) and the Theory of Planned Behaviour (TPB). First survey responses show that the core TAM mechanisms generalise across both modes. However, psychological concepts differ between both modes as extending the model with Subjective Norms revealed significant effects for both groups, with a stronger influence for non-shared autonomous mobility. These findings suggest that while core TAM dynamics generalise across AV types, nonshared autonomous mobility adoption is more sensitive to social influence and additional factors beyond TAM.