Within TRAIL,
Erasmus University of Rotterdam,
Delft University of Technology, the
University of Groningen,
Eindhoven University of Technology,
University of Twente and
Radboud University Nijmegen collaborate. Scientists and researchers of twelve faculties and institutes (spanning the fields of
economics,
technology, policy and management, and the social and behavioural sciences) form a concentration of experts in the fields of traffic and transport. Over 220 researchers, of whom 157 are PhD candidates, are active in TRAIL (2026). ==Research programs==