WP2 of the European Project TRACE is concerned with “Types of Situations” to analyse the causationudof road traffic accidents from the pre-accidental driving situation point of view. Four complementaryudsituations were defined: stabilized situations, intersection, specific manoeuvre and degradationudscenario. To reach this objective, the analysis is based on a common methodology composed on 3udsteps: the “descriptive analysis” which from general statistics will allow to identify among the studiedudsituations those them relevant and to give their characteristics, the “in-depth analysis” allowing toudobtain accident causes from the generic description of the problems identified in the previous step andudthe risk analysis identifying the risk of being involved in an accident taking into account the resultsudobtained from the ‘in–depth’ level. This report is dedicated to the identification of the accident causesudanalysed for the pre-accidental driving situation point of view, i.e. the circumstances in which theuddriver is involved just prior the accident. This analysis has been conducted from the scenariosudidentified for each type of situation during the descriptive analysis realized in a first part (Report D2.1:udAccident causation and pre-accidental driving situations. Part 1. Overview and general statistics).udThese results are based on the study of disaggregated data (in-depth accidents collection databases)udavailable via WP8 in TRACE. With the identification of the main causes and contributing factor, theudaspect related to the human functional failure has been taken into account. This innovative conceptudstudied in TRACE WP5, has been used here in order to have a more complete overview of theudproblems in working on each road users involved in the accident and not only on the whole accident.
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