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

Database Glossary Information
is not in the register this information is coded as “unknown” (21%, 5.1 -
12%, 5.2). This is also valid for foreign vehicles.
34. Kerb weight (all vehicles): This variable is obtained from the Swedish
vehicle register and in the cases where the vehicle is a moped, an
agricultural vehicle, a working vehicle, a tram or another vehicle which is
not in the register this information is coded as “unknown” (28%, 5.1). This
is also valid for foreign vehicles.
35. Pre-impact speed: This variable is in most accident reports not
mentioned (around 55% for 5.1 and 85% for 5.2) and is coded as
“unknown”. In the cases this variable is set to a value is when a qualified
estimation has been made by the investigator or if the vehicle has been a
truck and the tachograph has worked properly.
36. Most harmful event: Around 25 % of the vehicles in the DB is coded as
“unknown” because this variable is very hard to code when there are
multiple events and there is no proper injury analysis performed in the
accident analysis of fatal accidents (5.1).
37. eSafety: The presence of the eSafety systems (ABS, BAS, ESP, TCS,
ACS, LDW, CSS) is in most 5.1 cases not mentioned in the accident
report. For the 5.2 cases the drivers do not always know what eSafety
systems their car is equipped with. For most vehicles information of this
could be obtained from the vehicle manufacturers’ websites but in the
cases this could not be done the variable is coded as “unknown”
38. Strong winds: This variable is not coded in the police report therefore
most of the 5.1 cases are coded as “unknown” (97%). In the cases when
this is coded the accident investigator has made a comment about it.
39. Familiar with traffic system: For 13% of the drivers in 5.1, information
of this sort is not in the accident report and this variable is coded
“unknown”. 19% of 5.2 cases have this variable coded as ‘Unknown’
40. Police injury severity: When this variable is set to “unknown” it is most
likely that the road user is not injured or slightly injured. The reason that
this is not registered can be that the road user did not need medical care
or that the police have not been at the accident scene.
41. SafetyNet medical outcome: When this variable is set to “unknown” it
is most likely that the road user is not injured or slightly injured. The
reason that this is not registered can be that the road user did not need
medical care or that the police have not been at the accident scene.
42. Body region mostly heavily injured: In the 5.1 cases 20% of all road
users in the database are coded “unknown”. Nearly all of these persons
survived the crash and therefore there is no information about their
injuries. The number of unknowns is 25% for the 5.2 cases.
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