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As a new approach, intelligent speed adaptation (ISA) systems are being developed to help drivers to avoid speeding. In this study, driver acceptance of ISA was assessed based on questionnaire results in three European cities. The following questions were addressed in this study: (1) Do drivers like ISA systems? (2) Are drivers willing to pay for the ISA system? (3) What types of roadways driver like to use ISA systems? This is part of the work of STARDUST, an EU project aimed at assessing the extent to which advanced driver assistance systems (ADAS) and automated vehicle guidance (AVG) systems can contribute to sustainable urban development.