Identification and Safety Effects of Road User Related Measures, SAfetyCube Deliverable 4.2
Résumé
Safety CaUsation, Benefits and Efficiency (SafetyCube) is a European Commission supported Horizon 2020 project with the objective of developing an innovative road safety Decision Support System (DSS). The DSS will enable policy-makers and stakeholders to select and implement the most appropriate strategies, measures, and cost-effective approaches to reduce casualties of all road user types and all severities. This document is the second deliverable (4.2) of work package 4, which is dedicated to identifying and assessing road safety measures related to road users in terms of their effectiveness. The focus of deliverable 4.2 is on the identification and assessment of countermeasures and describes the corresponding operational procedure and outcomes. Measures which intend to increase road safety of all kind of road user groups have been considered. The following steps have been carried out: " Identification of human related road safety measures- creation of a taxonomy " Consultation of relevant stakeholders and outcomes of previous related projects for identification of most important human related measures " Systematic literature search and selection of relevant studies on identified key measures " Coding of evaluation studies " Analysis of key measures on basis of coded studies " Synopses of key measures. The core output of this task are synopses on road safety measures, which will also be available through the DSS. Within the synopses, each countermeasure (or group of measures) was analysed systematically on basis of scientific studies and is further assigned to one of four levels of effectiveness (marked with a colour code). Essential information of around 240 included studies was coded and will also be available in the database of the DSS. Furthermore, the synopses contain theoretical background on the measures and are prepared in different sections with different levels of detail for an academic as well as a non-academic audience. These sections can be read independently. It is important to note that quantifying the relationship between road user related countermeasures and road safety is a difficult task. Corresponding evaluation studies are not always assessing the impact of a countermeasure on the accident occurrence or severity but rather on alternative factors which, however, are proven or considered as relevant for road safety. The descriptive and qualitative context provided in the measures synopses is therefore important to be considered. The analysed countermeasures were assessed as 'Green' (effective), 'Light green' (probably effective), 'Grey' (unclear results) or 'Red' (ineffective or counterproductive).
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