Interrupted versus uninterrupted flow: A safety propensity index for driver behavior

► We developed a quantitative safety propensity index for driver behavior. ► Structural equation models were constructed for interrupted and uninterrupted flow conditions. ► Geometric road characteristics and weather related features were linked to crash data. ► Shoulder width, number of lanes, grade, visibility, precipitation, speed and AADT were significant parameters. ► Additional trajectory data will contribute to developing the models estimated in this paper.