The FEMA Haddon Matrix

The Haddon Matrix was developed by William Haddon in the 1970s. It is used to classify transport-related items with the help of two dimensions: accident phase and contributing factors. The aim of this classification is to point out risks and counter-measures regarding road safety.

The first phase, namely the pre-event phase, covers factors which help preventing or, on the contrary, may lead to an accident. Infrastructural counter-measures related to the pre-event phase are for example well-maintained roads without line-of-sight obstruction. In the second phase – the event phase – an accident is inevitable, the motorcyclist crashes. Now, factors are dealt with which determine the severity of the accident and injuries it might cause. As an example, an infrastructural measure that can minimize injuries in case of a rider’s fall is motorcyclist friendly guardrails. Last not least, the third or post-event period focuses on factors influencing what happens after the crash. Regarding infrastructural measures, immediate automatic emergency calls and fast response can be named.

FEMA has developed a special Haddon Matrix for motorcycling. It differentiates between human, vehicle, environmental and social factors affecting the three crash phases and encompasses a number of measures to improve road safety.

The FEMA Haddon Matrix for Motorcycling can be found below.

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FEMA Haddon Matrix for Motorcycling – Click for enlarged version

FEMA Haddon Matrix for Motorcycling



Disclaimer: All information provided is believed to be accurate and reliable. However, Federation of European Motorcyclists’ Associations assumes no responsibility for any errors and is not liable for any damages of any kind resulting from the use of, or reliance on, the information contained herein.