ABSTRACT
Method Behaviours were identified through an iterative process using 1 ) a theoretical assessment of what behaviours were possible, 2) video recordings of the road system using roadside and in vehicle recording, and 3) informal discussions with TWMV users . A final list of behaviours and their definitions were then developed for use in the later study. Figure 1 shows schematically the process for the development of the list of behaviours.
