Many references to policy paradigms and paradigm shifts can be found in the transport studies literature. Within this literature, diverse ways of interpreting and measuring paradigms and paradigm shifts are evident. This article critically reviews how paradigms are conceived in the transport studies literature and compares these interpretations with the policy science literature where the term has been more widely studied and used. The article proposes a conceptualisation of transport policy paradigms along four key dimensions: problem framing, goals, instruments and evaluation criteria. This conceptualisation helps to increase the clarity and usefulness of the term paradigm for both researchers and practitioners in studying transformative changes in transport policy.