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

Manual for SafetyNet accident causation system (SNACS) - Appendices
6.8 Appendix A: CPC-template
Common Performance Conditions - Dimensions, parameters and evaluation levels
CPC Parameters Explanations Comments Evaluation level /
influence on driving
performance
Design of
traffic
environment
Type of
traffic
environment
Important
factors
Complexity
What kind of traffic
environment is it
Within or outside of urban
area
Main road or highway
Any important factors which
significantly makes it easier to
drive or are there any risk
factors (road construction
work, hidden exits, unusually
tight curve radius, holes in the
road, etc)
How complex is the traffic
environment
Crossing roadways (crossings,
circulations, exits, etc)=
complex
Several lanes in any/both
directions = moderately
complex
Country road (0)
City traffic (-)
Several supportive
factors (+)
No obvious risk
factors (0)
Some risk factors (0)
Many risk factors (-)
Not complex (+)
Moderately complex
(0)
Very complex (-)
Source
of info
(inspectio
n of car,
interview
with
driver,
etc)
Quality of
info
very
reliable (+)
reliable (0)
less reliable
(0)
not reliable
(-)
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