In the field of the central core theory of social representations, research which has focused on the normative aspects is relatively recent as it dates back little more than ten years. The theory of conditionality which developed from research into the periphery of representation results from this. It is a particularly fruitful theory to explain normative latitudes and the behaviour accruing to them. One of the particularities of these works stresses the importance of linking the normative aspects with specific methods and/or analyses. In this paper, we will illustrate it via a specific tool developed in the field of traffic psychology: the Conditional Script Questionnaire (CSQ). This approach makes it possible to highlight the interactions between two systems of norms: the legal system and the social system. The implication of norms is fundamental in different processes already studied such as social influence or identity processes, and this article can be considered as an illustration of the place of norms in the field of social thinking.