Objectives: Intelligent speed adaptation (ISA) aims to help drivers keep to the speed limit. The aim of the present study was therefore to examine if there are differences in drivers’ propensity to install intelligent speed adaptation systems due to the drivers’ country of residence, their aberrant driving, and the technical solution used. Methods: 224 Swedish and 316 Turkish drivers completed a questionnaire including the DBQ and questions about the drivers’ propensity to have different ISA systems installed. Results: Swedish drivers were less positive than Turkish drivers towards installing ISA systems. Drivers who frequently commit violations were less positive towards installing ISA systems, while drivers who frequently make errors were more positive towards installing the systems. Both Swedish and Turkish drivers were most positive towards installing the speed limit information system, followed by the advisory system, the supportive and lastly the intervening system.