Glossary of Data Variables for Fatal and accident causation ... - ERSO

Manual For SafetyNet accident causation system (SNACS)
6.1 Structure of manual
The manual starts with an introduction to which kind of results can be expected
from a SNACS (SafetyNet Accident Causation System) analysis, as well as
which the principles for analysis are. Also, the theoretical background for
SNACS is described, i.e. the accident model that shapes the SNACS
framework.
After the introduction comes an explanatory part divided in two parts. First,
there is a general description of what can be expected from different types of
collected data when doing accident analysis for active safety. This description is
based on the experiences of the Chalmers Accident Investigation team so
naturally they are not universal, but they may offer some guidance or insight
into the accident investigation process.
Secondly, there is a part in which the various components that form the SNACS
framework (Common Performance Conditions, Genotypes and Phenotypes) are
described. This is followed by an example walkthrough which in a simple and
illustrative way shows what a SNACS analysis can look like.
After the walkthrough comes a chapter entitled “The analysis step by step”
which guides the investigator through the analysis process in great detail. The
chapter has a lot of subheadings in order to make it easier to find the particular
part you are looking for when you are using the manual. The more experienced
SNACS investigator can use these headings to find the particular part of the
analysis where s/he needs guidance.
The last part of the manual contains a short chapter on how changes can be
introduced in a controlled fashion into the SNACS framework, should it prove
necessary.
If this is the first time you are using SNACS, our recommendation is to read
through the manual first, as this will give you the whole picture and make your
analysis a whole lot easier.
In appendix A and B you will find all the tables necessary for completing the
analysis. Appendix C contains a page that can be copied and used to carry out
the actual analysis on. Appendixes D and E contain an on-scene checklist and
an interview guide which have been used in previous projects and therefore
may be of some guidance to the investigators.
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