Abstract
Many studies have attempted to measure driver behaviour or to classify drivers' attributes according to questionnaires based on psychological indicators. Although such studies have met with success, for example, correlating behavioural types with accident risk, few attempts have been made to correlate these attributes with direct, dynamically measurable quantities such as desired following distance or its responsiveness to speed changes. In this paper the author examines whether such a correlation is possible by examining results from a pilot study using an instrumented vehicle and a group of eleven subjects. In particular, the focus is on how following distances are correlated to the Sensation Seeking and Internality-Externality Scales.