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Journal of Transportation and Statistics
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Volume 9 Number 1
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Paper 6
Table 1 Dependent and Independent Variables
Excel
|
CSV
Independent variables
Category
Variable
Name
Number of accidents
The (log-transformed) number of accidents with persons killed or seriously injured
LNACCKSI
The (log-transformed) number of accidents with lightly injured persons
LNACCLI
Number of casualties
The (log-transformed) number of persons killed or seriously injured
LNPERKSI
The (log-transformed) number of persons lightly injured
LNPERLI
Dependent variables
Category
Variable
Name
Laws and regulations
Law of June 1975
→ mandatory seat belt use in the front seats
Law0675
Law of November 1988
→ introduction of zones with a speed limit of 30 km/h
Law1188
Law of January 1992
→ a.o. speed limit of 50 km/h in urban areas and 90 km/h at road sections with at least 2 by 2 lanes without separation
Law0192
Law of December 1994
→ 0.5‰ blood alcohol concentration imposed and higher fines in case of 0.8‰ or higher
Law1294
Law of April 1996
→ a vehicle driver should give right of way to pedestrians who are (or have the intention to) crossing the street
Law0496
Weather conditions
The quantity of precipitation (in mm)
Quaprec
The monthly percentage of days with precipitation
Pdayprec
The number of sunlight hours
Hrssun
The monthly percentage of days with sunlight
Pdaysun
The monthly percentage of days with frost/freezing temperatures
Pdayfrost
The monthly percentage of days with snow
Pdaysnow
The monthly percentage of days with thunderstorm
Pdaythun
Economic variables
The percentage inflation
Inflat
The (log-transformed) number of unemployed persons
Lnunemp
The (log-transformed) number of car registrations
Lncar
The percentage of second-hand car registrations
Poldncar