TABLE 1 Dependent and Independent Variables,,
Category,Variable,Name
Independent variables,,
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,,
Laws and regulations,Law of June 1975,Law0675
,?  mandatory seat belt use in the front seats,
,Law of November 1988,Law1188
,?  introduction of zones with a speed limit of 30 km/h,
,Law of January 1992,Law0192
,?  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,
,Law of December 1994,Law1294
,?  0.5‰ blood alcohol concentration imposed and higher fines in case of 0.8‰ or higher,
,Law of April 1996,Law0496
,?  a vehicle driver should give right of way to pedestrians who are (or have the intention to) crossing the street,
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