Monday, 22 July 2013

Original Manuscript available on line - Evaluation of an autonomous braking system in real world PTW crashes

The original manuscript of the paper Evaluation of an autonomous braking system in real world PTW crashes published on Traffic Injury Prevention will be available for consultation soon.

To cite this article: 
Giovanni Savino, Marco Pierini, Matteo Rizzi & Richard Frampton (2013): Evaluation of an Autonomous Braking System in Real-World PTW Crashes, Traffic Injury Prevention, 14:5, 532-543.

Preview of this article:

Evaluation of an autonomous braking system in real world PTW crashes


Powered two wheelers (PTWs) are becoming increasingly popular in Europe. They have the ability to get around traffic queues, thus lowering fuel consumption and increasing mobility. The risk of rider injury in a traffic crash is however much higher than that for their four wheeled counterparts. The European project Powered two wheeler Integrated Safety (PISa), identified an autonomous braking system (AB) as a priority to reduce the injury consequences of a crash. This study assessed the potential effectiveness of the AB system developed in PISa, taking into account the specific system characteristics that emerged during the design, development and testing phases. Fifty eight PTW accidents representing European crash configurations were examined. Two of the largest crash types were a PTW impacting a stationary object (CFS, 16%) and an object pulling across the PTW path (CRS, 54%). 43% of the crashes contained a rider with MAIS 2+ injury. In 67% of cases, the application of AB could have mitigated the crash outcome. Analysis of the real crash cases under a complete set of possible rider reactions showed the potential for an expert rider to avoid the collision. An early reaction of the rider, associated with a correct application of the brakes would have avoided 18 out of 37 CFS and CRS crashes. Conversely, according to the analysis, an expert rider would not have been able to avoid 19 out of 37 cases. In 14 of the 19 cases, the AB would have contributed to mitigate the crash outcomes. 

This is an Author's Original Manuscript of an article submitted for consideration in Traffic Injury Prevention (copyright Taylor & Francis); Traffic Injury Prevention is available online at

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