Quantifying the effectiveness of ITS in improving safety of VRUs

This paper presents the results of a safety impact assessment, providing quantitative estimates of the safety impacts of ten Intelligent Transport Systems (ITS) which were designed to improve safety, mobility and comfort of vulnerable road users (VRUs). The evaluation method originally developed to assess safety impacts of ITS for cars was now adapted for assessing safety impacts of ITS for VRUs. The main results of the assessment showed that nine ITS included in the quantitative safety impact assessment affected traffic safety in a positive way by preventing fatalities and injuries. At full penetration the highest effects were obtained for Pedestrian and Cyclists Detection System + Emergency Braking (PCDS+EBR), VRU Beacon System (VBS) and Intersection Safety (INS). The estimates for PCDS+EBR showed the maximum reduction of 7.5% on all road fatalities and 4.4% on all road injuries at full penetration, which comes down to an medium estimate of around 1,900 fatalities saved per year in the EU428 when applying the 2012 accident data and 100% penetration rate. The results regarding future scenarios showed the highest effects in number of reduced fatalities per system in the EU428 in 2030 for PCDS+EBR (4200 fatalities), Blind Spot Detection (BSD) (422 fatalities), INS (420 fatalities) and VBS (411 fatalities)